Post tit-fuck relaxing

Millie just lays on her back with her eyes closed, rubbing my cum into her big tits, but then she suddenly opens her eyes with a panicked look in her eyes and says:

"You have turned 18, right Matt?"

"Yes, a little over a month ago." I reply, and Millie looks relieved hearing this, and closes her eyes again.

I wait a bit, then climb off Millie and lay down on the sun lounger next to her. The sun has by now moved a bit, so we are both laying in the sun rather than in the shade, and I watch Millie lay with her big tits pointing up in the air, glistening in the sun from being covered in my cum, but she does not seem to mind that the sun is baking my cum into the skin of her big tits.

Having just cum, in combination with the sun being quite hot, I feel quite tired, so I feel myself drifting of to sleep. When I wake up a little later, Millie is not laying in her sun lounger any more.