Now, to me, being in a sexual relationship with another person means some behaviour doesn't require consent. For example, touching the other person in an intimate way. Thats THE whole point of being in a relationship, otherwise it would just a platonic friendship
rapey
For the benefit of lurkers....consent doesn't have to be verbal. Enthusiastic participation is absolutely consent.
If your partner is withdrawn or doesn't seem enthusiastic maybe check before penetrating to avoid being reckless and unintentionally raping them.
If they are asleep leave them the fuck alone or at least wake them up and check they want to be touched.