Domino complains that his mate no longer shares his interests.  She actually never did, she  just used to be so in love with him that she’d sit and smile stupidly at him for hours on end.  When he stopped giving her attention, she stopped giving him attention.  We always think it’s about anything other than that, don’t we?  We settle into a routine with each other and disconnect as the magic fades into mundanity.  She turns into the Maxwell housewife as he stops being the knight in shining armor.  Both have dashed dreams because they were in love with the idea of each other more so than who each of them really turned out to be.  But it’s comfortable enough and they like each other enough so they’ll figure something out.  In the meantime, leave each to their own interests, give plenty of privacy and don’t be a space invader.  This, too, shall pass.