Daina,
I certainly understand how you feel. I started seeing a therapist as part of my preparation for my surgery because I knew I had to change more than just my eating habits, I had to change how I saw myself, dealt with stress, and just plain old related to the world (and myself). I am still continuing to go regularly because that continues to change. Its been difficult "facing my demons" but it has been well worth looking at my life and realizing that taking care of myself is and will always be a priority. The hardest part has been allowing myself to actually FEEL my feelings... instead of deny them or hide with food... I was so afraid of feeling overwhelmed or lonely or helpless or whatever it was I was feeling that day.
Stay focused on what is important, you and your emotional and physical health. Keeping sight of that and making sure you are tending to your own needs should help you transition through difficult times.
And yes, dating kind of sucks sometimes. Its so hard to be vulnerable - but the alternative is unimaginable, so vulnerable I will try and be!