yaoi manga title help

hello, I've posted before but it was still not answered . So here's what I remember (Im not quite sure) - the seme was a novelist/author who just broke up wiith editor gf because he only does facial (doesn't cum inside his partner ever) , then there's this scene with the exgf talking with uke about this situation of not cumming inside , in which the seme hears them both and interrupt them (funny conversation mood not serious). Later on,seme uke had relationship , and seme still doesn't cum inside the uke, and uke starts to fall in love with seme so he feels sad...but at the end or near the end, while having s** they were both surprised when the seme suddenly released inside the uke and bam happy ending
please help, Thank you!