Her initial gentle kiss has now become more passionate. Our lips getting warm and moist. Our tongues darting in and out of each others mouths. Each of...us taking turns gently nibbling on the others lips, Soft moans of passion escape our mouths. Our hands begin to roam, exploring the others body. As our kissing become more, and more passionate. She begins to kiss and nibble her way to my ear. I begin to kiss and gently nibble her neck. Feeling her perfect ass in my hands. She lets out a soft. She took a few deep breaths and then quickly walked to the door and rand the doorbell. Her heart began to pound in earnest and her face felt flushed as she waited long seconds until the door was opened.Amber was in her room brushing her long strawberry hair and looking in the mirror when the doorbell rang. Her hair was silky smooth and hung down to slightly below her breasts. She put the brush down and looked critically at her outfit.She had on very tiny crotchless panties. They were pink. Was I wearing a bikini? Well, of course, I was. The exhibitionist in me lives on and I love the admiration and surreptitious looks, especially from the women. Deep crimson red, unlined top to show off my nipps, narrow straps over and behind my shoulders and a cheeky clasp at the front buried in my evocative cleavage. Skimpy bottoms to match, of course, revealing as much as I dared.I have to admit, I had already rubbed myself through the thin fabric even before I'd left the apartment, posing in. Hobbies, because he enjoyed painting his models. Girls, because he was such a timid boy, I wondered if he would have problems courting them.But in the evening, in the middle of the night, nobody disturbs us.It’s our time, private time between a mother and her son.Billy was waiting for me as usual. With expectation and nervousness in his eyes.It’s like that every night.At first, it was just a good-night kiss. I helped him with his studies and I rewarded him with a gentle peck on the cheek..