Monthly visit leads to alternate ending [mf]

I have a very sex-positive and easily aroused girlfriend. It doesn’t take much making out before she’s aggressively grabbing my pants and trying squeeze my cock. If we have any semblance of privacy (and even sometimes when we don’t), it can quickly escalate to “just take it out, I need to have it in my mouth” and more.

Frankly, she is the hottest woman I’ve been with.

A few days ago, after a pretty hot-and heavy session that ended with a massive creampie for her, we discovered she was on the cusp of the monthly visit.

That’s usually not a big deal but she told me it was especially heavy during the 1st day this month.

We work in the same office building and often take advantage of that. Many of the offices have glass panels next to the door and there’s no privacy. The layout of my office, however, has a significant blind spot.

The other day, she came to my office and I shut the door behind her. We went out of view and started making out.