In the wild, parrotlets travel in flocks, which can range in size from four to over 100 birds. Most species travel in flocks of about 5–40. They are believed form lifelong and tight pair bonds with their chosen mates, though it has been observed that they can re-pair with another. If the only possible candidate for mating is this new female, then they will mate inevitably and give you eggs. Parrotlets are social in general and it's unadvisable to keep multiple unless breeding them because they will no longer want/welcome your interaction. If you want to get a female, then be prepared for them to mate. Or, you know, to argue and attempt to kill each other - are you prepared to pull them apart if such things happen? Should you? Do some research before you make such a decision. c:

I have a boy parrotlet who is close to 5 years old and a boy budgie who is about 9 years old. The parrotlet loves to have his head rubbed but I don't have a lot if time to play with him and the budgie doesn't like to and often just pecks at him instead. The budgie isn't hurting him but he isn't too nice. I've been thinking about maybe getting a girl parrotlet to keep my boy company and maybe be a bit nicer. However I don't want them to mate and lay eggs. I've been told that there are specific conditions needed for them to mate but I don't want any chance of ending up with more birds than I want and I'd feel really bad about getting rid of any fertile eggs. Is there a way to prevent them from mating but still being aloud together?