What should I do about possible break up feeling?
I've been with my boyfriend for 18 months and for the last 6 or 7 months I've been having doubts about our relationship. The spark that I felt was there at the start, for me, just isn't there anymore. I feel unhappy and I'd rather spend time alone than spend time with him. Being intimate with him, even just kissing or holding hands, makes me feel uncomfortable. He recently asked me to move in with him, and I told him no straight away. I know he loves me so much and would do anything for me, which is what makes this so much harder.
About 4 months ago, I met a guy through a work weekend. We got on really well and stayed in touch for about a month after through texts and emails. I recently saw him again by coincidence and straight away I was nervous, got butterflies in my tummy and now can't stop thinking about him.
I know I shouldn't be feeling like this about another person, but I can't bring myself to break up with my boyfriend. Without being egotistic, I feel I would destroy him if I broke up with him, and while I'm not in love with him, I don't think I could do this to him.
What should I do???