In love with FWB....who is my ex HELP!!!!!!!!!

I’ve been hooking up with my ex since July. We had dated for a year and a half previously and he was fresh out of a three month relationship when we started to have sex again. And we continued on this friends with benefits pathway for a while now, we go out for lunches together, to movies, hook up once or twice a week, And talk to each other like we’re in a relationship. And I’m in love with him and I feel like I need to tell him. I’ve been going out with other guys, I hooked up with another guy. But nothing seems to change my feelings.

I want to send him this, but I don’t know if it would be appropriate to do it. I need your help