When you havn't had any, in several days/weeks/months/years (god fobid!) your sexual desire builds up, and you find it hard to resist temptation. The only way to release this pressure is to have sex/jack off. It cannot be suppressed by porn/petting/pillow talk. It just makes it worse!
My partner's in a full body cast. Since then I have been gagging for It. I'm going to the bathroom. Be back in 10