K1 visa after withdrawn asylum application

I met my boyfriend in Oct 2017 after he came to the US from Venezuela on a tourist visa. He applied for political asylum, but due to several reasons (medical reasons also), he left the US and returned to Venezuela (without filing for advance parole). I know this greatly jeopardizes his chances of being able to return to the US on his tourist visa again. He has also closed out his asylum case. Will this cause any issues with him obtaining a K1 fiancé visa or K3 spouse visa (if we marry beforehand) if I submit the forms? We can prove our relationship 100% and meet all other requirements. It’s just the fact that he returned to Venezuela that I am not sure will cause problems for us. Please help!

Did his tourist visa expire?

The actual visa itself doesn’t expire until Nov 2022. The visa is also for multiple entries.