"No no no! Heres the thing, I agree with you that Elena is acting really bad when it comes to the love of these two brothers, but in this episode I think Rose explained it best. Elena is beyond confused and I truly feel like she’s petrified of Damon’s love for her. I don’t think she knows what its like to be loved like that, with that much force and that much passion. Its like a ocean wave crashing against you, you’re thrown back and you tumble and you fall but you love it. Somehow, deep inside you loved the thrill of it so you stand right back up and do it again. Elena is afraid, she’s trembling down to the bone afraid of being loved like that, and honestly I would too. Being loved that intensely is a scary thing, knowing someone thinks that much of you and relies on your love and relies on you; it’s scary because you don’t know what to do with it. She has feelings for him, thats blatant; but she doesn’t know how to accept them fully. That’s tough for us to watch because we’re used to things being fast paced in the media world. You read a chapter in a book and you know despite that cliff hanger, there will be another chapter directly after that. We also know that in an episode of a show if something crazy happens there will be another episode in a week. It’s consistent, yet sometimes very unrealistic. The writers have done an amazing job with Delena, they’re realistic and they don’t just happen in one episode. The journey of their relationship just makes everything all worth it in the end. When you spend a day working your ass off for something, doesn’t it make the reward in the end all the more sweet? Patience is a virtue and this is definitely one ship you have to be patient with. We’ve all spent our moments where we’ve been mad at Damon for lashing out, or Elena for being indecisive; but the writers always somehow bring us back to them.

Don’t stop watching yet, you’ve survived this long. And remember, we’ll survive this, we always survive."
the article from link