When your ex ceases entire contact with you this means he doesn't want you back. If he comes back, but never stays then he's using you for sexual gratification.
"and shows signs of liking"It seems you answered your question yourself there. If he shows signs that he likes you, go for it.
I'd say soo! It's soo obvious. Bringing back good times only shows that the guy misses those times. I wouldn't judge it just on the flirting though, all guys do, even if they don't like you. If he tells you he wants you back, he wants you back! for whatever reason? he wants you.
It means that he likes you in the more than friends way that he wants to stare at you and you stare back which are one of the signs of love.
That means that he wants to go all the way with you or he wants you to be his girlfriend
maybe he just wants to be friends you could of miss-read the signs or maybe he thinks they mean something else boys are really confusing sometimes, don't let his friends get to you.
it means she wants you to have sex wiht her
It means that it likes u and wants to be with you and none else!_!
He wants to have sex with you.
she wants you too kiss her
it means he wants you back
if he shows you a sigh he likes you then you should like him back since he has feelings for you and there will be nothing to be shy about.
he might be to shy to shy to tell you the way he feels or that's the way he always acts-flirty