Question about a boy?

so i am 14 almost 15 years old and there is this guy who i do not know that well. i mean we have met in person twice but never really had a conversation. but we have talked online a lot and video chatted a bunch. so he goes to boarding school and he was on a break so i was talking to him a bunch while he was here so he went back this morning and last night i was talking to him and he tole me to text him because he feels lonely at school. so i said ok but if i forget you text me and he said ok. this guy is pretty flirty with me, but i know he is with other girls as well so i don't really think he likes me. but i do know he thinks i'm hot. he is very hot also. so i was wondering when i should text him or if i should wait for him to text me and also what should be my attitude to him in the texts. i want to be able to possibly get with him when he comes home again for summer in 2 months. if any wants to help me in depth with this and possibly with other stuff i have email, yahoo messenger, and aim/ichat. leave yours because i dont want to post mine on the internet