DEAR ABBY: I have been dating my boyfriend for two years. He is 10 years older, in his mid-40s. He is wonderful, kind, smart, and treats me well. There is only one issue: He still lives with his ex-girlfriend from 10 years ago. She and I do not get along. She infringes on my time with him – has him run her errands, drive her around, etc. when I am at his (their) house. He also ends calls with me a…