Cheating ocd and false attraction

Greetings, y'all. Im having a very bad day and i feel like i've emotionly cheated on my partner.. One of the worst themes of OCD is saying that I want someone else other than my partner, probably cheating ocd, saying things to others. And ocd lead me fight with it. I'm overexerted and feel nauseous. OCD gives me intrustive thoughts about someone who triggers me. "You want to see, be with XYZ" etc. It makes me extremely uncomfortable and makes me feel disgusting, guilty. And the worst thought about the person triggers me.. it feels so so so horrible more than anything. "What if i love him and not my partner?" "What if i feel like i do love him?" And IT FEELS SO REAL, PLEASE HELP ME.. im having a crisis. I feel so bad.. so so bad.. what if its not OCD and false attraction, what if its me? I hate that feeling. Oh gosh i feel horrible.. i don't want to feel false emotions or feelings.. i hate that. I only and only want my partner. Not anyone. I don't want to give up on my boyfriend and love someone else. I don't want it.. Im not going to leave him. But i feel so guilty. I feel like i emotionly cheated on him.. i want ro hurt myself or something. I CAN'T STAND THAT. I had this theme. It was my first. But having that again is like a chaos and it feels like its different this time, and it feels real like its not going to pass. I feel so guilty when i talk with my partner. I feel like im cheating on him..