She catches you masturbating

"... the fantasy where you catch me masturbating, which is also one of mine. When I break eye contact you will go up to your room and put on what you usually wear to bed. As you do you will think of me and become increasingly aroused. This arousal will continue to increase but once it becomes too great rather than masturbating you will decide to go to my room and confess how you really feel about me in the hopes that I feel the same way. When you see my cock your arousal and desire to have it inside you will become even greater and you be happy to do almost anything I ask for the chance to finally feel it inside you."

You watch her ass sway as she heads to her room and then head for your own. You remove all your clothes (since you sleep naked, which you assume Teresa knows) and lie down on your bed. You stroke your cock just enough to bring it to full erection and then wait for Teresa.

You don't need to wait long.