Love advice?!?!!?

I have a situation VERY important! So my friend had been with her ex for about a year and 7 months, then about a week and a half ago she broke it off because she didn’t like how she was always yelling at him and putting all her issues on him. So they’re still hugging and talking a bit but I noticed I’m stupidly developing some feelings. I guess since I used to like him before he got in the relationship the feelings come back when he’s single? I keep thinking small little gestures signal him liking me, but then I remember he recently JUST left a relationship and another one probably isn’t on his to-do list. Should I just hope the feelings go away? I refuse to tell him or anyone, seeing as I do not want to cause any drama w/ my friend that was with him. Any pieces of advice besides telling anyone?

UPDATE :((((

They got back together today 🥺🥺