How to cope with Lovebombing withdrawal

Li

I'm finding it hard to get over the fact that a guy was initially so interested in me and invested a lot of time and effort chasing me. When i finally reciprocated his feelings (didn't sleep with him yet) then suddenly he's moved onto someone else without any signs. I honestly don't know how to cope with the situation. I feel so mentally exhausted like this is all a mind game. And i don't understand how he can just walk away freely as a new man without a care in the world. What are some tips to get over this and start feeling better? Its been a long time but deep down I'm still not healing and I've tried everything, counsellors, meditation, hobbies, new man... but i can't seem to get this horrible feeling off my chest deep inside like i'm not meant to be loved or cherished by someone.