depends on the relationship. All the "respect" problems can be asked by defining if:
- there is total sincerity?
- the two people in the couple define (even not-formally), accept and then follow their rules?
If the answers are "yes" and "yes" there are never problems.
In this case, the dude see problem in this other guy presence? If there's a problem, then need to be discussed. If he see no problems, then there are no problem.
Also, the world will always be full of people external to the couple that will be disrispectful. The two in the couple are the responsible of their action and to react properly to these external situations.
Its very rare to have a real "external problem", in couples its always a matter of decide, define, and respect rules with the other person.