liking a person

hello,
i have a question...in light of changing relationships and how to approach love and like, i was hoping someone may be able to offer a philosophy on which i can base a relationship...

i tend to love all souls i meet, but sometimes i meet people who make my heart quiver. and this is what has happened in the last few days. the thing is, i believe in recognising your twin flame - love at first sight - but when i meet someone who is not my twin flame but makes me want to be with them, what shoud i do?? who is he?? i suspect that he is part of my soul family...but in what way??
if we are to share thi part of our journeys together, i am really happy, but i know our paths only converge for a temporary while...i wonder if he would be open to this idea - and that we share as much as we can in support of each others` journey until we grow apart? i even think that i could go on soul journeys through making love with him...though i do not know what he believes spiritually... the thing i do not want is to enter into a relationship and get into past patterns of dependence and possessiveness where i am not totally free to be myself and givemy love freely to others, then go through a traumatic breakup...
i guess what i am asking is, under the evolving idea of relationships, do you think if i know that my attraction to him (at a soul and personality level, physicallly, etc) is sthis strong, even if i know that our path together will be a temporary one, is it part of my learning to have a relationship with him?? he is not my twin flame, but could he be an important part of my journey if i am attracted to him?? or is he soul family who i should stay friends with??
also, would it be really weird if we were to enter into a relatinoship, if i were to outline these beliefs to him and tell him that it would be with these beliefs that we enter into a relationship???
...lol im not sure if that makes sense, but i am hoping for advice please...