My boyfriend is the ex of my brothers current girlfriend. And he keeps on mentioning her? I mean, he makes me feel like he loves me, but he just mentions her with everything he does? Such as, "when I was with Maria (her name), we used to -" and so on, and "I was depressed when she broke up with me. But its okay. Your brother helped me through it" and I don't know what to do? What does this mean?
It means that he's not done with her.
If you want him then you must make yourself a more important part of his life. Don't fall into the trap of comparing him with other blokes ; if you do, keep it to yourself. Let him know that he's talking about his ex a lot and that he needs to move on if he wants to develop a new relationship with you.
Just tell him It's either you or her and that you cannot put up with his continuous references to her.He either wants you or her and for him to make his choice be It not to your liking.