I'm really not sure why you're using "just dating" pejoratively. The GP might feel no desire to settle down or might enjoy repeating the initial rush through s

I'm really not sure why you're using "just dating" pejoratively. The GP might feel no desire to settle down or might enjoy repeating the initial rush through serial monogamy. Alternatively, he may be open to the prospect of marriage but not be sufficiently dedicated to it to be marrying someone who feels that they're just settling for him.