My boyfriend has recently started a musical hobby at his job. He played piano as a child but dropped it long ago. Suddenly he announced he wanted to get back into it.
Around the same time he started talking about violins then his colleague Rachel played violin. Other things she said. I was detecting a bit of mentionitis.
It turns out they have met once a week for a month between classes (both teachers) to play together. Now he's talking passionately about this hobby but not about her anymore. They practice together just the two of them.
As for our relationship, it feels stronger than ever and he told me how happy he is the other day. Outside of this I have no concerns.
Should my reaction to this new hobby and friend just be 'have fun'? Truth is I am a bit jealous. I love him and don't want to lose him.