How to euphemistically tell my boyfriend to change his screen name to that of a couple?

It is supposed to be said directly, but some people directly dislike it. Although lovers are lovers, they may feel compelled. Otherwise, when we are together, we should change our heads and inadvertently meet one of the couples. Let his staff ask him if he wants to change his tune at will. Hehe ~ ~ In fact, sometimes it is very sweet for couples to get some good tricks.