Absolutely!!! My wife and I truly enjoy sharing our cum every chance we get. She loves it when I suck our cum from her pussy and share with her in a deep lovers kiss.
Ever since (at 17) my gf and first lover kissed me deeply with a mouthful of my cum, I felt it was incredibly erotic!!!
Guys, if you haven't tried it, you should... your lover will most likely orgasm immediately as you enjoy the taste of the two of you together. Every girl I've shared this experience was immensely turned on.