Relationship advice

I was in a relationship for almost 5 years, pretty much grew up with this boy. We went threw a lot of stuff, but he broke up with me in June of 2016 and since then I've been trying to get over him. I met the sweetest guy, he treats me like a queen and does so much for me and really is almost too good to be true. However I'm still very much in love with my ex and lately it's been harder and harder to try to keep him out of my head. This new guy to so sweet and really
Likes me and he does everything my ex didn't do however I find myself telling myself to just move on and try to actually like the new guy but it's so hard. I just don't know what to do. It feels like I'm forcing myself into a relationship to fill a void. Any advice?