DEAR ABBY: I admire your wit and appreciate your candor, which is why I’m writing to you. I’ve been dating a man for 4 1/2 years. He’s 56; I’m 60. I hope for a life with him, marriage, a place of our own, etc. The only obstacle is his obligation to look after his aging parents and help them stay in their home, which he promised them years ago. At first, I was OK waiting for him to finish with them and looking forward to a time for us. I tried to help. I even moved into his parents’ home with the three of them, as I am a certified home care aide, but his mother was impossible. Even though it wa…