relationships smh

I currently have a partner that i dont think i'm too happy with if im bein' honest

they kissed me, which i liked, but now i'm ill and the feelings are sort of feeling, plus i've only just got out of a relationship with another guy, and it was a pretty serious 2-3 yr relationship and i found out he was cheating on me and it crushed me, but then my new partner literally three days after the breakup kissed me and i felt like i might of sort of forced myself into it?? i'm scared to breakup with him tho bc of the guilt i'll feel, especially since he's kinda not doing the best mentally.