How about you go for neither? Frankly I hate both of them. Though I guess that's just my opinion, but hey you asked for it.
You should pick the one that you want. Just keep in mind that Tali is a Quarian, and as such having sex with her will probably have repercussions at some point in the third game. Oh and it's inter-species, you have no idea what she looks like, it's fucking creepy etc. At least that's what I think. The only consequences of having sex with Jack are.....well you had sex with Jack. What the hell is wrong with you?
You could also romance with Miranda or Kelly (I think).
WayOutThere said:
You can have a romantic relation with Tali? How does that work with her enviornmental suit and weak immune system and all? Nevermind, I'll find out on my own.
Well if you care about the game's plot then prepare to be disappointed.
Yurimistress said:
Oh and for everyone crying bloody murder to the fact that Tali can boost her immune system for a short while so that she CAN engage in a physical relationship with Shepard just get over it already. It isn't your game and the developers can change whatever the hell they want. Besides, Shepard was gone for two years, who knows what technological breakthroughs were made.
I'm not going to get over it. I think it's ridiculous that BioWare did this just for fanservice. I believe that romances in video games have never been done correctly, and when BioWare just hastily throws them together like this it's not convincing me otherwise. It's just wasted story potential.
And the Quarian marine who get shots once ends up being sick for a week. Despite having combat sealants and a massive amount of anti-biotics, a small infection still incapacitates him for an entire week. If the Quarians had any technological breakthroughs, they certainly didn't have anything to do with immune-system boosting.