will they hatch?

Brief：
i have got two fischer lovebirds blue about 3 weeks ago they started making a nest and feeding each other and mating i know one is defiently a female .. 

i have got two fischer lovebirds blue about 3 weeks ago they started making a nest and feeding each other and mating i know one is defiently a female has there is 4eggs she sits on the eggs all the time the other one who i am not quite sure about suits outside the nextbox and occisionally goes in to feed her and sit with her a bit but i was told they can fool you anyone got any tips

Leave them be and let nature take it's course. They will do fine on their own.

Get a book. That way you have accurate information. the only way to find out is wait it out, unless you want to crack open the eggs We raised a family of finches, even after the momma finch escaped and our cat caught her. Daddy finch raised them, there were 4-6. Only disadvantage was that he could only teach them his song. None of them learned the female call, a sweet warble. The male had a 2 note ssstweet- sssstweet. They all sound like squeakly rocking chairs! Call the petstore where they sell those kinds of birds. They should tell you exactly what to expect. Sounds like they are a mated pair. :) They have to have mated to lay the eggs, so that means that they are probably fertile. If they have something wrong with them the parents will eventually push them out of the nest, the same with a chick that wont survive.

If this happens, or its months and they still don't hatch, take the nest box away. After a couple of months you can put it back, empty. then supply them with the materials to make another nest inside.