<human>: Sorry if there has been a post about this kind of thing, i tried searching but wasn't sure what keywords to use. Here goes...

She was dating a guy at her school for i think about a year and a half, and then last year they broke up. I thought there were many reasons for their breakup (she cheated on him a couple times, and although he never found out, it was very obvious she didn't really care about him), but she claims that it was because her best friend didn't like this guy at all. So, she broke up with him. Flash forward to 2 weeks ago, and her and the best friend are living together. They have a HUGE falling out and today my friend decided to move out. Now she feels alone because she has no best friend anymore, and broke up with this guy due to said best friend. 

I've tried telling her that this is a golden opportunity to meet new people, especially considering she just turned 21 and can go out to bars and stuff like that. But she told me that even if she makes new friends, she is going to still feel empty because she has no boyfriend. 
So what do you say to someone who claims they need that relationship? I sort of feel like she shouldn't be feeling like that but I have no clue what to tell her.

Can you condense the text into a few key points?
<bot>: My friend and her best friend have falling out and now she claims she needs a boyfriend to not feel so empty.