@PurpleOrange,
PurpleOrange wrote:
...
Now, the reason why I'm hesitating with breaking up with him is because I know his behaviour is at least partly due to his depression; that because of his mental health he doesn't have the motivation to put more effort into this relationship. He has also told me that if it wasn't for me, he probably wouldn't be here anymore, which makes me worry about his reaction if I break up with him. ...
That right there is good old-fashioned emotional manipulation. You do not have to give into it. In fact, you never have to give into that sort of tactic.
Because that is what it is. It's a tactic to get you to hesitate, second guess yourself, and justify your inaction to yourself and others.
Now, you may be thinking that I don't really know him, he's a standup guy and he couldn't possibly have ulterior motives, etc. etc.
Don't be so sure.
But even if we give him the benefit of the doubt, and assume he's been 100% truthful in that area, you're still left with a guy who would rather game with his buddies than talk to you.
Breaking up in person is a nice idea in theory, but if it would be difficult or expensive for you to do it that way, then don't bother. As for calling him on the phone, since you don't normally communicate that way, he will know something's up. Which may be a good thing, actually.
So I would try calling him, if I were you.
Your opening line?
I don't think this is working out.
The truth is, he will probably be relieved. Breakups tend to be mutual if the relationship has clearly run out of gas, like yours obviously has.