So last night i got on my regular hangout chat site, and was added on Skype by someone. We started talking on voice, which i usually prefer to typing when it comes to intellectual real-time conversations, but after half an hour or so, despite already knowing about my orientation (it came up at almost the beginning of the conversation, he was talking about a previous girlfriend so i mentioned my experiences in that regard), he started to ask me sexual questions (masturbation frequency, what techniques do i like, and so on). It was stressing me out of course, but he seemed like an intelligent guy otherwise, so i just politely told him that it's stressing me out because he's male. Then he ended the call and continued via writing, saying that he'll call me later when i'm relaxed. I said ok, but then he said "we should relax together", and i asked what he means by that. He said that he means masturbating together. (I wonder what possesses some people to push it this far after repeatedly being told that i'm not into them....i mean really, you have to be pretty damn desperate for that...) I told him -again- that it's not going to happen, and that he should kill himself, then i blocked him and retreated into my room to cry.
When i returned, still distraught but somewhat able to control the trembling in my hands, I would've really liked to talk to someone, but no one picked up my calls, and then my mother told me to go to bed and "cut it out", as if crying was an insult to her. So i just cried myself to sleep like i always do when this sort of stuff happens. And this morning when i got up, she asked me why i was mad at her. I was not even mad at her, though. I was upset because of that guy. But she didn't pay any attention to that - typically, again.
What am i doing wrong? I just want to make friends, and i get hit on in return, and i can't do anything about it. Should i just give up on talking to people, or what now?