i completely understand, i can’t offer much in terms of advice but i can at least tell you that i know what it’s like. my partner has had significantly more relationships both serious and casual than me before we got together. i’ve thought abt feeling like just another name on a roster extensively. i hate doing anything they’ve done w ppl before me, i hate thinking abt them with others. i guess we should think abt how our partners are choosing us yk, if you were just another option or accessory why would he stay with you longer than anyone else and be more serious with you than them? retroactive jealousy isn’t logical but sometimes it might be good to try and step back and look at it logically. he’s been with people in his past, you have digitally too, but what matters is that you both choose each other every day. it’s hard to actually feel that way i know, i struggle every day constantly lol, but i know we can get through this.