No because a guppy is in Poecilia family and platy is in Xiphophorus family. These families cannot crossbreed. Male guppies will try to breed with anything they can but that doesn't mean there will be any results.
__________________ “Why does Sea World have a seafood restaurant? I'm halfway through my fish burger and I realize, Oh my goodness.... I could be eating a slow learner! ” -Lynda Montgomery
Y male guppy keeps chasing my female platty around and it keeps trying to mate is this even possible???
actually it is possible i was looking at fish facts on youtube and their was a video about some people who had managed to crossbreed... but in this case your fish won't crossbreed because unless you in ject the female
hope this helped