He still likes me i think he sending me signal but he has a new gf?

i am 16 and i grew up with this boy and he liked me his hole life and i only stared to dat him when we were 12 and we were dating on and off til we were 14 and then we lost contact 2 years later me and my family were invited to his 16th and he was textin me and then i went and met him and slept with him and we started dating agin and then about 1 month later he was acting strange so i read his messages and i think that why he ended it then i went to my mates and they just tryed to make me jelouse and said they will go with him and i beleved them over him he stoped talking to me then i was at a party with him and he kept looking at me and i was leaving and he said to his cousin she wont talk to me and she said she will then he said bye rachel i am confused help