Claim Me by Bijou Hunter

Indigo O’Malley has been in love with Siobhan since they were teenagers. The biker watched her grow into a beautiful woman, find love, and lose it. All while Indigo stood in the shadows and waited for Siobhan to see him as more than a friend. So many times, he tried and failed to find the words to explain his feelings.
Unable to wait any longer, Indigo finally makes his move. Loneliness and passion collide. Nothing goes as he plans. Indigo figures he’s lost Siobhan forever.
Except their passion created a little surprise.