He could have worded it in a less rude way but he does have something valuable to say within it.

Your post shows that you don't like how you are feeling, you ask if it will ever change implying that you want it to at some point. marc's point is that if you want to change your yf you love should be good motivation to do so. Worry less about how you feel about his post and more about the content and if it is helpful or not.