How do i finish this relationship wiv my bf of 7months?

Ive been goin out with my bf for just over 7months.. i met him on a chatroom and we got talking for about a month and then he asked me out ive met hima few times and realy like him but i cant deal with this long distance thing how do i tel him i dont wana b with him because i still wana b mates with him an chat and that but the only way i can finish it is on the mic on msn or phone.. but phonin costs 2 much pleaseee helpp i dno wat 2 tel him because i realy do like him, i speak 2 him every other day on this other chat programme, but i fink i shud find sum1 that lives closer to me.