1)they always go on a mission together

2)natsu will do anything to save lucy like the time when she was falling of the building

3)natsu didn't have any fun in the rainbow blossom seeing picnic.

4)natsu pulled off a tree just for lucy could see it

5)his dialogue:"just you try hurting a single hair on her head cuz i'll turn you into smouldering ashes" when she was captured.

6)when everybody was talking about natsu and another girl she was the one having that weird liking thought

7)in the oracioun seis arc when lucy and natsu were falling off the waterfall lucy held enough tightly to protect him

8)when natsu said thanx for the clothes which were given by virgo lucy blushed and virgo also thought that natsu likes lucy
8)in the edolas arc when natsu was getting really angry on the king and was just about to fight lucy hugged him and stopped him.why did'nt she just hold him by the hand or shoulder?

9)in the edolas arc when lucy got caught by the trap inside the cave,the voice actor of natsu had to shout out first why not wendy's voice actors.why did the writers write it in this way?

10)in the edolas arc when natsu and wendy were drained of all their energy why was lucy the one holdig natsu and gray wendy?it could've been the opposite.why do u think the writers write it like this and drew it.