dei and saso have been togther for a while but during a mission got in to a bad fight becuase sasori wanted deidara to leave him so he wouldnt be in danger any more.
soon after dei got with sasuke but he always thought of sasori.
so he was never really happy being with sasuke.
when sasuke smield or kissed him he was uncomfortable until he thought of sasori again.
that always helped a little.
![](https://s2.save4k.ru/pic/nhwNp8npOno/mqdefault.jpg)