<human>: Condense the text into a few key points

I'm a 19yo female, my boyfriend of 7 1/2 months is 23, and I am having a lot of trouble saying "I love you" to him. He said it to me about 2 weeks ago, adding that he knows I might not feel the same way, but he wanted to let me know how he felt. 

I adore him. And, I'm 98.9% sure I love him back, but my last relationship (lasted 4 years) ended very badly and now whenever I think about letting this one get more serious I feel extremely panicked. 

He hasn't been a serious relationship for over two years and has time to heal. I, on the other hand, met him about a month after my break up because a friend twisted my arm. I ended up liking him and said "Why Not?". I'm not still in love with my ex (trust me), but lack of healing time after his betrayal has made it very hard for me to give away my heart again. I am terrified of getting tricked and trapped in a relationship again.

I want to be able to take that next step with this relationship, but I can't help but hold back. So r/relationship, should I tell him I love him? Or keep giving it time? Would that really be fair to keep my boyfriend thinking I don't return his feelings? Or are things really moving too fast?
<bot>: I love my boyfriend, but I was recently hurt by someone and now I'm terrified to get more serious with this relationship. Do I say it or slow down?