Is It Going Too Far - Yes, But Maybe Not Yet?

My daughter is maturing physically and mentally. She has pert breasts and her figure is impressive in running and volleyball shorts. Lately she has been going further with me physically. I first noticed her pressing her breasts on my arms when we spoke, and has sat next to me on the sofa to snuggle up to me and reposition so that my hand would rest on her ass. At times I pat or rub her ass, and lately I've ben letting my hand linger longer as or after I've rubbed.

Most recently, she wore a thong under a long t-shirt to lay around the house. She eventually sat next to me and arranged my arm over her. My hand rested on her ass, then she moved so that her shirt would ride up. My hand was on her bare butt, and I let my middle finger relax and it pressed against her ass crack. She responded by spreading her cheeks slightly until my finger was between her cheeks. This went on a for a few minutes until my finger was against her crotch. I felt her warmth and slipped a finger under her thong. I played with her a few minutes until I felt her tighten and she stifled a moan. She grazed my dick with her hand and pulled at my shorts. I said "No" quietly but she didn't stop. She put her lips around the head of my erection and slowly drew me in. Her mouth was soft, warm and wet. She went slowly and took in as much as she could. She remained slow, sucking on me without using her hands. Her head bobbed but she didn't suck frantically. I could only last a few minutes before I unloaded in her mouth. A good deal of my cum fell from her mouth, landing in my underwear. We sat together with her snuggled against me through the rest of the movie. I massaged her butt crack and deeper to rub her asshole the rest of the movie that was on. At the end she kissed me on the cheek and told me "that was nice." I replied, "Yes, it was, but you better go behave now."

My wife and I are happy and our family life is healthy and active. My daughter and I are close, but now I feel as though I initiated something I will regret, but I am so turned on my her and her advances.