I don't get the bed arrangement you have???
I agree, it sounds totally fine to ask for some refrain from them when you are around if you are feeling uncomfortable. I kiss Mono goodbye when my husband has said his goodbyes and has left the room... kind of a last word and connection before he leaves. If we need to be connected we usually take it elsewhere so no one else witnesses. It just feels better. I don't kiss my husband in front of Mono either unless it's a quick peck.
It really isn't much of an issue any more. It used to be, but as we have threesomes sometimes now, the issue dropped quickly.
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