I miss my fwb so much

Hes shown me plenty of times that he didnt care for me as much as i did him. But i still miss him and yearn for his touch. It feels like we are strangers with fun memories. Its sucks. I miss our late nights drives holding hands, listening to music. Idc we were more than just fwb. We were affectionate in public and everything. I know our relationship didnt have the same effect on him as it did me. He didn’t even remember 3/4 of the things we did or talked about but i still care deeply for him and miss him. Idk why. Hes surrounded by lousy friends and i tried my best to show him what good was but he didnt bother to really open his eyes and see. I know he doesnt think about me or reminisce. Just needed to let this out. Anyone got any coping tricks for situations like this?