something wrong with me

I am 23f

I don't know what but something is wrong with me I overanalyze my feelings. I want everything perfect I think that's the big problem like in love I thought u would never get attracted to someone else apart from your partner but if u r a human being u will attract it's all about how much u value them but in my case I think my bad if I found someone attractive even I don't want them in my life they are 0 for me for me love is a choice which I already did..

but from the last 1.5 months I notice I have the bad habit of analysing everything every stuff.Sometimes I think what if I make an impulse decision n cheat on him which I don't want but I don't know why my brain always wants me to feel guilty they make me villan I am suffering even I don't want to anything wrong but I guess my past is also n issue my childhood also but I want to end this thought sometime I fear what it this thought manifest I get more sacred than I search for validation everywhere is this normal I don't know what's wrong with me