Take Me By Force, Sweet Prince!

From Renta!:

Yoshiro Mochizuki is a girls' comic artist. He only fantasizes and has basically zero experience with love. When he orders pizza during a slump, the one who delivers it is Takahiro Kanno, Yoshiro's ideal handsome guy. After that day, Yoshiro frequently orders and becomes a regular customer. He successfully becomes friends with Takahiro!! Before long, Takahiro helps him make his comic by telling him his love stories and acting as his pose model...!! Before they know it, they go from shooting a kiss scene to their first time making love, and from crossdressing on a school uniform date to making love outdoors. The two of them are making smooth progress, but...! In addition, also included is another story which illustrates the relationship of an odd trio with two tops and a bottom.