let me chime in here for a moment because, no offense to all my other bros on here, but i think i'm the only one in your age bracket [with experience].
i'm 23, almost 24. been on gear since i'm 18. been using tren since i'm 19. and man, have i fucked up some relationships in that time...
but i dont blame the gear, i blame myself.
i blame myself firstly for not being in control of myself. for not being true to myself and my significant other.
what i mean by that is; i've learned that tren at dosages upwards of 500mg a week will turn you into a different person (at least myself). everything you are thinking is skewed and just wrong overall.
steroids are a drug but when you take them they dont get you "high" like drugs do. they sort of put you on a 'natural' high and sometimes that can be very bad if you take into account who you are when you're off them.
i can safely say that now, with all these years of experience at just 23 with nearly every steroid on this planet at a variety of doses, the drugs still do change my thoughts especially tren which i am on right now @ 350mg a week along with 250mg test a week.
i vaguely see it in myself, but i see it more in the way my girlfriend reacts to me. with every change of dose or addition/removal of a compound, i see a change in her behavior (or maybe thats just me imagining who knows). the bottom line is there is a change happening somewhere and that is just fuckin inevitable because it really is not natural to look the way we look and take the things we take, so it only makes sense that it'll translate into unnatural behavior. don't you think?
by the way it's absolutely great that he tells you what he is taking steroids, because my girlfriend doesnt know a thing or so i think.
but now, with every compound and dosage i take i dont only think of my own self first, but i first think about how it will affect the people around me. it is very important for your boyfriend to understand that he is not alone in this, and for him to get a grip. its not as easy as sticking a needle in yourself and eating and working out..