There is no denying that this is enjoyable, that they're both basking in the pleasure and sweetness of it all even though there are questions there, of what is happening and why and how. Thanatos is not in near as harried of a mental state, but somehow he can also tell this isn't going to hurt him and so he feels no need at all to call it off.

His body shudders with each thrust, each drag of their bodies luxurious and inciting more and more want, whatever that may be. Thanatos can't quite tell what it is that he wants, other than he knows he would be absolutely content to stay here for a long while, however low they can keep this going- with or without releases.