The first season’s clips for them should be around, maybe they’re geo-blocked for you and you’ll need to try an unblocker or use Opera, for example, to switch your location and search “from” somewhere else? For example, this channel seems to be uploading quite a comprehensive set of their clips, with English subs, it’s still near the end of season 1 right now but they’re being added quickly:
https://www.youtube.com/playlist?list=PLkQRZCaDC-VQuMC6o9OGFwQMjsMuVFjFF
Okay, I knew there was an older one too, on dailymotion:
https://www.dailymotion.com/playlist/x6iztn
Just keep in mind while searching, you may need to search for either Alex OR Alejandra and for The Pier OR El Embarcadero. And searching dailymotion works better through google than their own search engine.
Edit: Sorry, forgot to mention whether or not they end up together:
SPOILERS:
.
.
They do.