Are you able to lie, even though you have Aspergers?

Yes.

And like all humans, including the vast majority of autists, I do a lot of lying.

Because these settings don’t produce dissonance, I can lie fairly convincingly in these settings. It’s my conscience and my commitment to my own ideals that holds me back.

Is it better for 2nd generation Western Muslims to marry someone from their parents' country or a western Muslim who was born and raised in the West?

Less than I used to, sure. When I considered it an inviolable obligation to mask, I lied constantly. I didn’t often lie with my words, but I implied facts that were untrue with every breath and movement. I was too terrified of the abuse that might result if I didn’t. Telling the truth was too dangerous.

Nuda Veritas by Gustav Klimt. Public domain.

When I lie, I’m not very convincing. No one ever looked at my masking and thought, “Now, that’s a normal person! Why, I’d like to have a drink with that woman. She seems just like me.” Similarly, when I speak untruths, I doubt most believe me.

How does an experienced gay/bi guy handle a bi-courius guy on his first time?

Cognitive dissonance is incredibly uncomfortable for me. If I don’t feel like I’m doing the right thing, it shows. The only times I can lie convincingly, verbally or physically, is when it feels morally and ethically correct to lie. While performing in a play, for example. Or while comforting people with dementia.