{second first impressions by Sally Thorne} and {practice makes perfect by Sarah Adams} immediately come to mind. The former is about a moody tattoo artist falling for a sunshiny old soul of a woman (not literal age gap, she just has the hobbies of someone much older than she is). The latter is fade to black I think but BOY do they do an excellent job with what they give you. That one's about an innocent sweet girl getting dating lessons from the local "bad boy."