Psychological effects. Misusing anabolic steroids can also cause the following psychological or emotional effects: aggressive behaviour. mood swings.
I share your friend/whatever's concerns.
IANADoctor, and I don't know
anything about you apart from what you've revealed, but unless it's a medical need (noting that self-prescribing, like it appears you do, makes that unlikely) I would stay away from these at all costs.
It's tempting to take what you say regarding the guy as meaning he is her
true boyfriend, but that's through your interpretation. If he is, she seems to like you as a friend, so consider the possibility that she fancies
you and he is 'just' a friend. Especially if her feelings are unrequited (due to your apparent ambivalence to her) and he's happily acting as her 'wingman'.
That's all hypothetical. Right now I understand how she might consider you a character, you're presenting yourself to
us as a character, by your own words.
Look, it's possible that you're destined to be merely platonic friends (so long as you don't push her away further) or that she has great feelings for you but is currently concerned for your welfare or state of mind. With 'friends with benefits' sitting nicely between. But there's no real way to know on the information
we have, and maybe not even if we'd been looking over your shoulder all this time.
In words that I don't use lightly, you first need to get your shit together. I don't know
what shit, entirely, but it sounds like there is definitely some out there, loose, beyond what you've already told us. A heart-to-heart (or at least tete-a-tete) is needed, but it would be good to know where you are
in yourself before you do that. But don't take too long.
And if you're unsure where you are, then you're at least open to mildly and pleasantly surprised by finding that you
are her crush, but also content to discover that she just likes you for conversation, perhaps the one person she knows who
doesn't keep hitting on her. Don't close either door, while trying to find out which one(s!) actually lead somewhere.
And if it crashes and burns, learn. Don't dwell, don't rebuke, don't throw your toys out of the pram (if it goes wrong). Don't assume you have found
the stairway to heaven, don't get clingy and don't (definitely don't) immediately propose marriage (if it goes oh so wonderfully
right).
You seem to have something with this girl, special in one way or another. And a friendship of
any kind is a good thing. (So long as there's no hint of her running with organised crime, being partial to boiling pet rabbits or being an Infiltration-Bot from the future, that is. Just keep a sharp eye out for the signs and keep an 'escape kit bag' in your closet, I suggest.)
I am not a relationship councillor. I can't tell you that my own history in this sphere has been perfect. You'll not get anyone able to sort you out in a foolproof1 way to proceed. "Guaranteed pick-up lined" are bunkum and no other type of line will come withban iron-clad warranty. It's on you, I'm afraid. But then that's been the case for virtually every other human throughout the world, throughout history, and some of them clearly managed ok, at least some of the time. The odds really aren't so terrible, and you often get to roll again.1 With the fool it needs to be proof against being any of us, you, her, that guy, your mom, your sister, President Trump... Take your pick.