Well, I would weigh it out, how many times are there doubts? Was it great at the start or were there always doubts? If it's always been good right from the start the chances are good.Part of is, that if you are nibbling and you feel it's enough, and don't feel the need to dwelve further, it's a good thing. If you feel you must get deeper, then it's not insecurity you are feeling, it's wondering about the future. Don't worry!
If it's constant that you feel the nibble is not enough, then it's not fulfilling.
When I get a nibble and it's NEVER enough, I know it's time to let go. There has to be a decision made at some point in order to make the other be secure. If he or she feels you are constantly tasting it's an issue right? Taste like it, or don't like it, but don't reach for the intimacy if you are fulfilled.
I notice when I reach for my partner out of insecurity, or when I am already happy, just testing it makes him unhappy. Ask him patiently but firmly why he is moving away from you when you reach for him, the answer will be truth at that moment.
Does that help?
I got this phrase from a counselor at a teen center who got a lot of girls being pressured for sex with their b/f's and didn't know what to do. They never thought about saying No, so they would say later. My friend said to say, I just want a piece of the pie, not the WHOLE thing because I am happier that way. It's an easier way to say No thanks, I'm full, plus it makes nibbling much sweeter when you are hungry.
It's something she would say. She was a bright woman who I miss and she helped a lot of young immature girls including myself:>
The first time she told me this I was with my ex b/f and she could tell I wasn't happy with him, shortly after that I realized we were not in love as I was never fulfilled by just being with him.
Natasha