Kaley Cuoco is ''very happy'' with fiancé Ryan Sweeting.

The 'Big Bang Theory' actress couldn't find the words to describe how delighted she has been with her tennis star beau who she got engaged to this September after just three months of dating.

Talking on the 'The Ellen DeGeneres Show', she said: ''I am very, very happy. Life is so good right now. I cannot even tell you!''

Kaley - who ended her romance with Superman actor Henry Cavill in mid-July - wasn't ready to date again this summer when she was initially introduced to Ryan but begrudgingly agreed to meet him while he was in Los Angeles.

She explained: ''I had kind of an interesting situation over the summer and I was kind of in a weird place and a very close mutual friend ours said, 'Oh my god, have you met this guy Ryan?'

''I was just not in a good place to meet anyone. I said, 'I'm not ready. I'm taking time away from love for a while.' I was very sad. And they said, 'You know, he's coming to town. You've got one day to meet him, have a drink, and meet him.'

''I was putting it off and really nervous about it and just not wanting to do this. And so they gave him my number and he texted me. He was like, 'I'm coming to LA.' I'm like, 'Oh my god, so now I have to see this guy? Do I have to hang out with him all weekend? Is he going to be here for, like, days?' ''

Kaley and Ryan - who is based in Florida - hit it off and she admits it still feels though they're on their ''first date''.