It seems like you are holding her to a really high standard for friendship while not really knowing them that long (just guessing based on the fact that they've only known you hypomanic). Not everyone is going to be your best friend and want to be around you through thick and thin. That's the sort of relationship that develops over years, not months. There are honestly very few people that I hang out with that I would tolerate "aggression" from either. Those are people I have known for years and with whom I have formed deep, lasting, and trusting relationships. But that's not all my friends, and I would never expect it to be all my friends. Frankly I don't have the time to put that much emotional investment in that many people, and I don't expect everyone else to have that time for me.

Them lying to you about hanging out with other people isn't cool though, and it's probably a sign that this friendships' ship has sailed. If you have fun with them and they still want to hang out from time to time for a good time and that's a level of friendship you can handle, go for it, but don't expect to count on them for emotional support.