Always ejaculate in her. Intercourse with my first wife, ‘Yasemin,’ always involved something special at the moment I came in her… I make a lot of semen, and when I ejaculated, she would cry out because she felt the warmth filling her, and usually laugh joyfully, speeding up her own rhythm rocking her pelvis. Those times that we came simultaneously were especially fun. Yasemin said that feeling all that cum would push her over the edge. Her contractions, in turn, would milk more ejaculate from me.
For one of my girlfriends in college, I did always pull out. She wasn't ready for intercourse, so we stayed with oral sex. She didn't want semen in her mouth, either. So each time, as she sucked me, when I felt myself about to cum, I would tap her on the hip so she would stop sucking and let me pull out. I'd cum into a towel.
Except for that one time in the car. I had kissed and licked at her pussy and clit (she wasn't ready for cock, but she loved the feeling of my tongue inside her), and she came in a climax that, according to her, lasted the better part of a minute. When it was my turn, with her own pants still down, she went down on me. While she sucked me, I lifted up her shirt so that I could hold her big bare tits. My continuing excitement from having felt her climax against my face, then from feeling her naked body while she sucked me, were just too much. I came unexpectedly… a huge, hot load in her mouth. Her eyes went wide, and she puffed out her cheeks like a squirrel. I quickly pulled out the towel and she spit into it. I apologized, of course… I didn't know that was going to happen. She wiped and said, “It's OK… I just wasn't expecting it, and there was so much! All I could think was, ‘What do I do with it?!?’”