From what you've described, I would ascribe it to 'long-term transit of Pluto' in approach TO your Natal Venus. Would have an effect like that of etheric pheromones. You could already possibly be attracting those whose personality is primarily to be sexual. The selection may surprise you, and may not be the usual type you would be ordinarily attracted to.
Romantic feelings could be heavily evoked.
Look at transiting Pluto currently at 27+ Capricorn --
Also in Capricorn, transiting Mars and Venus (at 12+ 13+ Cap now) are scheduled to travel together as a 'couple' through mid-March. These will cross and come in contact with your Mars, Neptune, Venus planet cluster.
For the March 2nd at Full Moon in Pisces 12.07,
transiting Venus + Mars will conjunct and remain in-step together in degrees of 26+ Capricorn, and through 27+ 28+, and 29+ -- be together EXACT in 0+ Aquarius-- for your VENUS RETURN March 7th {Venus Aqua 0.37'}.
Transiting Venus+Mars start parting conjoined degree at Friday March 18, and more after March 20th, at which Venus conjuncts your natal Jupiter Aquarius 18+, activating your Cradle Aspect. Nice!!!
Have you discerned the kind of Vocation you think you have?
What's your Calling?
Does it match the education and job field you entered (if you've graduated as yet)?
Mars Venus
They will still be considered in-sign in-orb till Venus changes sign from Aquarius to enter Pisces April 7th.
Your Ascendant and South Node are Pisces 13+ 14+ --
transiting Venus will bless you with a visit to your first house after Full Moon Libra 26.46 on Saturday 16th April.
That would make Sunday 17th April, Easter Sunday.
I've seen people with Pluto in the 9th house (God's House) be people of strong faith. Sagittarius can talk about 'faith' too, along with 9th House {Sag's natural house}.
It's nice that you were born just before Christmas, and just before the culminating Full Moon 22.08.
Your Sun is on a Sagittarian Fixed Star Ras Alhague
{Gives an aptitude for teaching, or healing; feelings to provide Service .. associated with Social Work, politics; caring, psychological and healing practices; mystical healing; also in one culture is called the astrologer's star.}
Your Moon Gemini 13+ approaches Fixed Star Rigel?~16?
{Star of Learning and Teaching, wanting to spread wisdom, and being one who can 'make a difference'!}.
With your question on 'how' to handle the relationships (with transiting Pluto's soon strengthening effect on your Venus?)---
I'd say you need to define your Values.
Know and decide what your 'Boundary' lines are/will be in advance!!
Also, to have a good confidant {eg parent, aunts, sibling, trusting friend, etc} to talk about your strong emotions and allow them to give feedback. Discuss your boundary-lines. Let them be your 'accountability partner(s)'. IF they note you not-acting in accord with your professed values, give them permission to SAY something to you. {Let it be an agreement in-advance.} Listen to them. Then reflect on your own, again.
Love, romance, is like a wonderful drug that places the 'rose color' lenses on ALL. You can feel willing to compromise YOUR OWN self and Good Senses, and sacrifice those to the man/partner that has taken your Heart.
LET your friends, sisters, whomever-- be able to REACH the part of you that is 'sane'!! LOL. Love can make you crazy, Do crazy things-- like being high or drunk.
You say you've been in love many times.
Have you done 'comparison' notes on what the issues were in all of them?
When you run through the analysis,
What do you think the common-denominator is?
WHAT are you looking for?
The older you get, the more refined your choice in men(?) become. This could help?? LoL.
Also, have you ever sat down for a few sessions with a professional counselor? The counselor could probably PIN down 'what it is' with you, and give you some insight on your relationship choices, and possible childhood patterns being unconsciously played by you with your partners.
Seriously! If there's a women's self-help group, get together with them. Or the Counselor. ... AND, whomever you choose as confident that 'knows' you (as a person).
Venus-Neptune ... Idealization.
Need some friends that can help you stay on the ground, in a practical way. {But without squelching that beautiful sensitive creative nature that you have.}
So Yep, after all these love experiences, expect that you'll find yourself becoming more Efficient about your Dates. LET yourself HAVE your boundaries and keep them i n place.
(Just because a guy is 'soooo nice' doesn't mean you have to fully accept and give yourself. Reserve yourself.)
SET your Boundaries.
WHEN you come in contact with those you say "I cannot resist"--- RED FLAG, okay?!!! Let that feeling be a CUE for you to think "BRAKES ON!!"
You CAN resist -- SET your boundary.
SET your Default behaviors.
Protect your Heart, and your Self.
(Go make that list of traits! ..)
BEST of Luck and LIFE to you!!!