Why is he bragging to me about girls and teasing me ???

So he’s only my freind he brags about all the girls he gets and shows me pics of girls he likes he also teases me play fights with me stares at me all the time he constantly comes around me why is he bragging to me about the girls he gets I don’t understand he keeps showing his body of to me showing me his abs lifting his top showing me his boxers he acts diffrent with me always teasing me does he fancy me or something