Ever considered Lucy x Loke? Because that seems more likely to happen than Natsu x Lucy. Although, I love Natsu and find him uber attractive, Loke x Lucy seems more likely, since Natsu doesn't like Lucy like that and Lucy doesn't see Natsu in that way. But, it would be totally cool if Natsu starts to fall for Lucy, and Natsu and Loke have some complications with each other. With an addition of Taurus XD That would be fun to watch.