I know it was just a glass but apparently, Sophia has a small tolerance for alcohol so it doesn't matter the number of glasses she drinks, it's the mere drinking of alcohol that counts. As for Alyssa, you know perfectly well I don't give a damn about your "precious" only if she and zac get to have a Mother & Son affair, if not, then...meh. She is perfectly fine with Antonio and zac than going lesbian; I do like a straight Alyssa though hehe.
As for the piece of shit next door, you're going to tell me the idiot doesn't know the difference between juice and whiskey? It doesn't matter if it was just one glass or two it was the intention of getting her either drunk and to lower her inhibitions. You may hardly call it drunk but alcohol has an effect on Sophia very quickly compared to normal and Dylan doesn't use it on her because he doesn't want to get her under some influence for her to give in, instead, he tries to earn it from Sophia.
He would give up a video game console in exchange to see her breast which is more important to him, he would try and get a job and/or a girlfriend and help around the house, all he gave up was a video game console, and possibly a bike for something he actually wanted, asked for, and agreed to. So Sophia made an agreement with Dylan while she was also pleased with the foot massage he gave her earlier. Begging? it's more like an agreement than what you think.
And when Dylan stops looking in the mirror at the Breakfast in bed event, she checks out and she sees Dylan not looking (anymore) she is pleased that she can still trust her son instead of risking everything between them.