Preferring Daddy

I'm going through a bit of a patch. My 22 month old has started preferring his dad. It wouldn't be so bad but I've never really felt like he ever preferred me. I couldn't breast feed and he's always been happy with us both but all of a sudden it's daddy daddy daddy. I'm at work all day and the bedtime is the only time I can spend with him during the week. And now he only wants daddy. To the point where he doesn't want me there, just his daddy. I know its probably a phase but I'm finding it really upsetting. He's never been much of a cuddly toddler so cuddling him when he's sleepy and just before bed is literally all I get. I'm just really sad about it. I know its silly.