Im a women who is in a relationship of 6yrs and wiv a child by my man,im biual, and is sleeping wiv a girl ?

This girl and i really do like each other we only admitted dis the other day,since then we've been doin things 2gether kissin and stuff.The weird thing about all this i dont feel guilty about what im doing to my man,i do love him,he's goin in the army this year. I dont know what to do? please help xxx