Divorcee Dating

I was just wondering if it's considered a sin for me to entertain the idea of dating. My ex-husband and I have been divorced for 15 (16 in February 2023) years and I've not had a boyfriend in all that time. Now a friend is desperately trying to set me up with a man. She's gone as far as to invite me and my 17-year-old daughter to join her on a cruise with her next October because, "there's a lot of nice-looking men". In all honesty, I'm surprised she's not made a dating profile for me on EHarmony or one of the other dating websites. That's how she met her husband and they just celebrated their 19th wedding anniversary last month.