You need to make it clear in everything you say and do that it’s not the case – that you do love them and that it’s not their fault.
Not seeing the children for a while after the separation might help you and your ex but your kids might think you aren’t interested in them. you need to keep talking and listening to them, and let them know you love them. Be careful not to overload them with ‘adult’ emotions as this will be confusing for them. Don’t use your kids as confidants or as a go-between for you and your partner, as this may make them feel like they have to pick a side.
So while seeing them for the first time in a while may be extremely emotional for you, make sure they know how happy you are to see them. You also need to let them know that you can’t always understand how they feel, and that they might want to talk to someone outside the family – a youth worker or helplines can help here.
Kids may refuse to believe what has happened and try to get you and your ex back together. This can be a dangerous. Think about how they’re going to feel when they fail to do it. The only way you can avoid this is to be extremely consistant and clear about the situation, and not to give them false hope. Don’t make promises you can’t keep, or threats you won’t carry out.