I have pondered this many times with my wife. I don't think they feel true love, maybe because it was never shown to them. The times I felt loved the most from her was when I felt I was there for her, be it emotional, physical or financial. If for some reason I couldn't be there, like when I spent 2 days in the hospital and she hardly came to see me, or when I was sick at home with a high fever and she went camping. I didn't feel loved.
Or when on our wedding night, a very long stressful day, she wanted to be drunk and awake until 5am. And when I said I would like to rest the next day, instead of taking a short trip we had planed, she said shewould go by her self.
I'm not sure there was ever true love. I wanted to see it so I did. Now though I think I was just her enabler, I played that part very well.