Would you support interspecific marriage if we encountered intelligent aliens?

Suppose we were to encounter extraterrestrial life. In this scenario, assume that we are confident that these beings are intelligent and capable of making their own decisions. They have their own civilization, and perhaps they are even technologically advanced enough to have found us before we found them.

If a human and an alien were to fall in love, should they be allowed to get married? What factors are relevant to you in deciding whether or not interspecific marriage should be allowed in any given case? Would it matter how humanoid the aliens were? Would it matter whether or not the couple would be able to reproduce?