so this guy is rly close w his female friend. he calls her bae, wifey, tells her he loves her, says he wishes he was with her when they aren't together and etc. he basically has a bf/gf relationship with her except for the fact that they aren't dating. they were even gonna go on a trip alone together for a month! 

he is a guy with very strong morals and i'm the first girl he ever rly liked seriously and he puts up with my bad days and never loses his patience and is very caring and sweet and great. he is very against cheating and his strong belief is if u are in a relationship u shouldn't be thinking abt other people. we have been commited to trying to date for some time now and we are very close, the only thing holding me back is how to deal if we date with their couple like relationship. i feel like i would be sharing my boyfriend. 

signs he doesn't like her; i asked him to guess once and he said he didn't like anyone else besides me but if he had to guess he guessed about seven girls before he guessed her. i think this says a lot and once i told him some of the things they were doing he said "okay now i can see why ppl might think of it like that" he also talks to her abt me for advice and boys don't talk to girls they like abt other girls. he also sacrificed a lot for us. also he sticks up for me and defends me often

my question is how can i deal with this i'm not jealous abt him having a female friend but how do i deal with their bf gf relationship without feeling like i'm sharing my bf?