If you have Venus in Scorpio, would you get along with a Pisces?

Yes I'm sure you'd like all the attention he'd give you, typically Pisces try hard to please and they will give you all the intimacy or alone-time you need. you could get along fine but I wouldn't recommend spending a LOT of time together. See if there are any Neptune or Jupiter aspects between you, trines or conjunctions. That will help, I'm sure you realize Sagittarius and Pisces are not very compatible. As long as your suns aren't in a close square you should be fine. Pisces and Sagittarius are very flexible and because of that they can get along much longer than the average, rigid Taurus and Aquarius pair would.