Good or bad in terms of what? Your recovery? It depends on what your goal is. I would think that the feelings aren't good or bad, but how you address them can make all the difference. If you repress them or feel guilt or shame over them, it's not great. If you investigate why you feel that way, it can be a blessing.

I would guess that Borderlines are more likely to fall in love.

You should discuss it with your therapist, I'd say.