Provide the theme summaries for the following conversation: 

Marciano: I think Dave is gonna break up with Tina
Ciara: no shit
Ciara: everyone knows that
Lenny: nah he's just talking
Lenny: he is always complaining about her but they will go Ross and Rachel till the end of time
Ciara: no this is different this time
Marciano: he asked me if he could crash at my apartment at the beginning of next month
Lenny: when he tries to break up she cries, they have sex and two days later everything goes back to normal
Ciara: I think there's some girl he wants to date now
Marciano: he didn't tell me anything about that
Lenny: Ciara, how do you know that?
Ciara: facebook, he started to go to the events he has never been interested in
Ciara: pottery classes and such
Marciano: god he's always turning into his gf's clone
Lenny: if that's true then he must have been cheating on Tina
Lenny: he cannot stand being alone
Ciara: that's why it's serious this time
Marciano: should we say sth to Tina?
Lenny: all we got are hunches it's not enough to call him a cheater
Ciara: I don't want to be involved in drama
Ciara: once I told one girl to dump her assholish bf and it got nasty
Lenny: she's so into him she won't believe you
Marciano: I'll feel bad if I won't say anything
Ciara: it's up to you man
Lenny: I think if you tell her just facts without implying anything she may later on connect the dots
Marciano: but maybe it will make her even more controlling and insecure?
Marciano: fuck being a good person is tough
Lenny: you're overthinking everything
Lenny: just tell her what you know for sure and if she'll get upset comfort her
Ciara: sounds like good advice tbh

Summary: 
Dave will stay at Marciano's house at the beginning of the next month. Dave started going to events like pottery classes. Marciano is going to tell Tina about Dave.