Showing No Choice by C. M. Steele

—Natalie Cromwell is an unassuming, and intelligent beauty and soon-to-be college grad.
—Cameron James is a hot, hardworking, and wealthy businessman.

Their lives crossed paths purely by chance. Visiting his sister in school, Cam sees Nat and instantly realizes that she's the one. Natalie on the other hand is very interested, but skeptical. Time and distance tear apart their relationship, just as she believed it would, but she didn't realize that Cam wouldn't give up.
Excerpt:
"It still galled me that she was with someone else. I wondered if they’d been together before the party and were just coming out again as a couple. Either way, it really didn’t matter—she was mine. Nobody was going to take her from me.

Tonight, she’d have the ring to prove it. I’d just picked it up that afternoon of the accident. It was a four-carat solitaire diamond with a platinum band. When you looked at the ring, it looked like a normal huge rock, but it was the inscription that mattered: No choice, you’re stuck with me."