past causing problems w future?

My ex broke up with me 3 months ago, we argued a lot and I’m not gonna lie, i kind of nagged her a lot..but i still think about her constantly and i still love her as much as i did before..I’ve been trying to move on and date other people here and there, but it doesn’t feel the same. I don’t feel like I’m physically or mentally attracted to anyone since her..any advice?