The dangers of feeling lonely

I'm not really lonely. It's more a case of a relationship not going the way I wanted it to. Actually, it couldn't be further away from what I wanted at the moment. And I have a LOT of time invested in that relationship, so it's still hard to let go. But there are those moments when it's really got you down, and you almost make a bad decision. Contact someone you know you shouldn't. Reach out to someone that would be very bad for you. All because you feel like you need someone right now. Luckily, I recognized the feeling before I hit Send on the email, but it still isn't a comfortable feeling. Tempting though.