Sex
or he dont clean up his mess. or he left right after.
If a guy texts every weekend, he may like you quite a bit. If he texts ever night, he may want to date you.
That's were its scronedoney
It is very likely that if a guy responds to your texts when he is busy, he likes you.
If a guy responds to your texts quickly while he is playing a game it means he is very interested in you.
late night call or texts, no mention of dinner or drinks, inviting himself to see your house/flat, always late at night, constantly talking about sex to you, smutty jokes, innuendo etc
He likes you.
Text her back.
Depends on the girl.
it obviously means he was thinking of you..
If a guy texts back quickly, it could mean he is interested in the conversation and values your communication. He might also be available and eager to continue the conversation.