This is so unrealistic! First off, u are not doing it just for that! To make it easy for you imagine that girl has absolutely nothing that u like about her and still doing this! You wouldnt do it, would ya? Which means that you expect to partly enjoy the ride and have some more expectations. To be brutally honest, i think you are just buidling urself a getway excuse and once everything falls apart you are gonna tell yourself and everybody else that you didnt even do it for yourself!