Your girlfriend loves you and this relationship, but... she's thinking it may not go anywhere unless you can make one change. Be like her! Be bisexual. Simple as that. Right?
After she tries to get you interested while inside her, she sees it just isn't going to happen that way. Even with her dirty talk and encouraging you to look at your dick going in, only your dick - appreciating it - it just isn't enough
So she busts out the dildo! She starts rubbing herself, enjoying your mouth licking and sucking on it for her. After that, she instructs you to press it between your cheeks into that tight ass hole. This really gets her going! This is exactly what she wanted. Are you feeling bisexual yet?