my girl friend and i do this differently! she lays on her back, I am on my knee's by bed side her sex partner starts work his cock in her and we deep tong kiss as he slide deep in her. After few minutes of fucking and me kissing her playing with tits, back off till the bull is going to come in her and i start lightly kissing her lips then as he cums we deep kiss. this to us is being very supportive and very much a big turn on for us the we fuck after bull pulls out of her!.