I'm ashamed to admit that I had problems bonding with one of my kids, he was more challenging in his behaviour than the others and would deliberately wind me up. I loved him dearly but didn't 'like' him much. ( I feel dreadful admitting this) As he got older I saw there was a real danger of a rift developing between us so what did I do? I made time to have him on a one to one basis. I took him out on his own, spent real quality time with him. It wasn't easy, it took lots of planning and we still argued and fell out, but slowly we grew to like one another. He is a grown man now and living happily with his g/f in their own home but rings me several times a week for a chat or to suggest getting together. We are incredibly close and I couldn't be prouder of the lovely person he is. Sarah, your relationship with Isla looks solid, she is older and has had you all to herself before Lachlan came along and you are still prioritising her needs. She looks the kind of child to boast to her brother about the fun she has had while he has been at nursery. Make time for him, pick him up first sometimes, take him for little treats by himself. Yes you will have to listen to boring boys talk about power rangers and such like, but pretend to be interested, find stuff to talk about that is special to you and Lachlan, let Isla take a back seat sometimes and let Lachlan see that he is special too.