My dad used to say that. (He’s gone now, so I haven’t heard him say it for many years.)
“Love me, love my dog,” simply means we have to put up with things we may not appreciate about some of the people we know. This is such a fundamental idea that I too often forget.
We all expect perfection from others, at some level. The closer the person to us, the more we expect from them. (The opposite holds true too – we expect a lot from our governmental leaders, and we will probably never meet them.)
Annoying habits or choices can be huge roadblocks in any relationship. The sooner we get over being fixated on those things, the sooner we can enjoy that relationship.
And yes, that’s our little dog Sparky. She’s pretty easy to love, as she is very loving in return. But she loves to bark at squirrels and ghosts we can’t see. I hope you get to meet her someday.