My son has been sucking my breasts since he was little. When his friend came to stay at our house, he must have seen my son sucking my breasts. At night, when everyone was asleep, he asked if he could lick them too. He said he never depended on his mother, and he sucked my breasts with gusto. Since then, we have been having sex secretly. This abnormal relationship with my son's friend has been going on for 10 years now...