Can an ex regain feelings for you?

My ex broke up with me over a year ago. I think the bottom line was he kind of love bombed me.. I wasn’t sure for the first few weeks but then I started really liking him. we were both hanging out a lot, probably too much and I think it killed some attraction. But he has never left me alone, even when he’s blocked. I saw him on and off for 8 months after our breakup (yes I know bad idea) I last saw him in May and went 4 months before answering a text for him. But he had sent me 15+ j answers text.

he's asked me 4 times to play tennis
He recently asked me to hang out with his sister because she could use a friend
Asked how I’ve been another day
And today asked me to play tennis again

I don’t even respond to him and he keeps but never mentions getting back together or anything but I know he has some feelings and a lot of attraction. But I feel like if he had enough he would’ve been wanted to get back by now? Why doesn’t he ever leave me alone? (Yes I’ve blocked him before) can he regain feelings?
Can an ex regain feelings for you?
Post Opinion