@Itsthinking  
Its actually quite simple, psychologically speaking.
 
Rainbow Dash is the first person among the 6 you would expect to go bar hopping. Rainbow Blitz would have a bigger alcohol resistance due to his/her ‘tank built’ muscular frame (rarity’s description) now matching his size.
 
Rainbow Dash is easily the most Alpha among the group, I have no doubt that plenty of pegasisters would see Rainbow Blitz as the perfect boyfriend. Not too much of a gentlemen, but not too much of a brute either…genre savvy, lively, funny and intensely caring at times. While all girls have different tastes, I imagine most girls would have issues or concerns dating a complete martyr or a complete asshole.
 
A funny episode would be if Twilight actually DOES find a gender bend spell and accidentally uses it on Dash, and the other 5 quickly find out how irresistable he is to women in town…themselves included.
 
Except Pinkie Pie. She’s as gender blind as a gender bat. Her platonic/non-platonic(WHO KNOWS?? .) crush on Rainbow Dash wouldn’t change at all.

What is with Blitz and carrying/flying home drunks?