I honestly need girls and guys help please pleaseee!?

Alriiight well i went out with this guy lucas for over a year and we have sooo much in common, and well ofcourse theres some things in ur "significant other" that you dont like something that annoys you, well lucas has more than enough little things that get on my nerves, but i was sooooo in love i mean it would come and go some times but your not always gona be happy on cloud 9 all the time that just doesnt happen and well i broke up with him cause he would get really pissed when id text another guy whom he knows is completely a friend and i hadnt hung out with friends i na very very long time practically since wed started dating, well i got tired of it and finally broke it off abouta month ago. and now everywhere i go something ALWAYS reminds me of him any little thing and its driving me crazy like last night i went on a hangout dat ewith this guy that was in my history class junior year and he seems really really awesome but the whole time all i could think about was Luca and occasionally id get these stomach PAINS that hurt so badly i cant stand them cause i miss him....and he tells me he still loves me and would do anything for me still after everything and might i add some of my problems are due to ive lost so many people whom i am close to in my life more than a normal teen should..... idk what to do whats ur opinion?