Super Strange

A guy I’m talking to goes overseas but but buttttt he also comes back to U.S. with the same phone number .is that normal. I tried to FaceTime.. he doesn’t want to because he sees no point in staring at each other and not talk. Butttt I will talk tho.. we have talked on phone few times.. I meet him on Tagged (dating app).. but we get into it a lot. And we get along after.. (weird) but no matter how hard I tried to let him go and never speak to him again and never think of him again.. we always in up talking to each other again. It’s like I will be in showing thinking about class the next day and BAM!! His name pops up in my head..He has very very veryyyyy bad trust issues.. because he said people have done him bad and nasty things to him... I keep telling him I’m not that type of person. I will always care for always. It’s like he don’t believe me because we get into it over petty stupid shit.. but Idk know why I can’t let him go or stop thinking about him. We stop talking for 5 months before and here we are speaking again. It’s the trust issues he has a problem with. Thinks I’m going do him dirty like everyone else. Ps. He’s very smart and nice but man once he’s mad he’s mad mad... and lastly I always try to keep myself busy to not think about him when we don’t talk. Even now with workouts gym time and work. But he’ll be on my mind like omggg is he my soulmate or some shit? Like my friends said he’ll nah.. but idk this man is different. Usually I block men forever but not him. I tried to block him and that don’t work.... help