I add few more with Wan Peng (FL in My GF is an Alien):

Love Like White Jade - historical romcom (with a lot of comedy), no real triangle, more couples

Meeting You - almost no conflict and no triangle for leads, relaxing romcom

First Romance - also nice romcom and nice music.some love rivals, but it is bearable.

 kardasx:

I add few more with Wan Peng (FL in My GF is an Alien):

Love Like White Jade - historical romcom (with a lot of comedy), no real triangle, more couples

Meeting You - almost no conflict and no triangle for leads, relaxing romcom

First Romance - also nice romcom and nice music.some love rivals, but it is bearable. 

thank you again...

"The Long Ballad". This is by far one of the least toxic cdrama ML- FL relationships I've seen. Also, the FL is super strong and so is the ML. Really enjoyable to watch (and rewatch). There is no love triangle or misunderstanding either. The 2ML and 2FL also have a happy ending and no love triangle either. Would recommend 100%.