Will i ever be ready for love again?

I have been single for 4 months, after being hurt badly for weeks after, and now i'm at uni, and my ex still texts me sometimes. I have been interested in someone since being here, told him how i felt, and he turned me down. Badly hurt again, but not so much as before, I am interested in someone else again, who lives on my corridor. I fancy him, but i'm not sure whether he does me. He's hot and cold, I catch him glancing at me sometimes, but then he ignores me. I get so confused! It's coming to the point now, where i'm so self-concious about myself, and even scared of relationships in a way. I like being single because I don't get as hurt, but then i like someone and i am so low in confidence about myself and my looks. I'm so scared i'll be alone forever, i'm scared of relationships and i'm scared of intimacy. And just recently ive found myself thinking about my ex alot and about how he's hurt me, and because he left me, that nobody will want me, simply because i feel not good enough. It's even worse knowing i am lonelly, i have no real friends at uni yet, and the world feels like my enemy at the moment. When will I stop feeling this way?