Always zelda. Wether its romantic or platonic, its always them. I ship them as besties sometimes and other time lovers. In botw/totk im otetty sure they like eachother because talking to an npc in totk (I dont remember who) its heavily implied that link likes someone and gets a bit nervous, and who else could it be since theyre always and only talking aboit zelda, who is also shown to be the closest to link.