Update:
Things are still going well here with the pair, Sprout finally calmed down yesterday. He’s still crazy about her but he’s not constantly biting the bars and trying to get to her. Interestingly, it’s her now that’s biting the bars a lot more, I think she likes the attention he gives her. I know their connection between the bars doesn’t always equate to a good connection face to face but I do have a good feeling that they’ll get on when the time comes! She is definitely encouraging him to be more brave, he spends a lot more time out in the open now as he’s usually lounging next to the bars waiting for her.
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Be aware that the bar biting from the girl could be a territorial/fear reaction and not necessarily a friendly one.
All the best nevertheless. Don't rush the settling in stage and becoming friends through the bars (if that is possible).