Dear lamthexx, you talked about marriage being personal choice..in this regard i wanted to state that:

1) If someone wants to marry as per islam then he has to follow the islamic rules...and islam forbids same sex marriages...so islamically it is not permissible nor is it possible...

2) IF it is his personal choice and he is allowed as per the laws of that country then he should not bring islam into picture.

3) If he is staying in country under islamic rule then gay relashionships are punsihable offence