I have to agree w/the others...just leave things be. When someone chooses to do nothing, i.e., respond, then that is an action. You do not want to come across as needy or "expecting" him to text you more often than he does. The less you respond and act like you don't care about his lack of texting, the more likely he will become curious about you and what you are doing.
As for your cousin, do not talk to her about him. He may not like being discussed w/others. You may not have a clue what your cousin has told him and if she's talking to him about you...then he's probably turned off by it. Try to keep your conversations w/her on general things and not on your personal, love life. She may mean well, but she may not realize how this all looks to him.
Just my two cents.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
