I have this Natally, Saturn in my 7th house. I'm actually not too sure If that makes me the right person to answer this as some people say a natal aspect makes you used to that energy and others say it heightens it - I still don't know the answer.I've experienced someones Saturn in my 7th but that's because everyone of my generations Saturn falls in my 7th
I have pretty bad commitment issues ( Venus Square Uranus natally ) UNTIL I find someone who I deem the 'One' who is truly special, then I will give them my all and be the most dedicated, loyal, caring, deeply loving partner but that's only happened once a long time ago.
I think this person will be serious about you and your relationship with Saturn in the 7th house, some people argue it could be a 'downer' on romance but I haven't experienced this, I see it as someone who takes the relationship seriously. Saturn will want a commitment but only if the relationship is already off the ground and it gets to a place of true soulmate love not passing by love.