I am shook! A sign from God?!

This morning, I attended a New Year’s <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> church service with my aunt. Now 3 weeks ago, I found out my boyfriend of 4 years has been cheating on me terribly. It was bad and the things I found out was gut wrenching and heartbreaking. When I found everything out, I confided in my aunt as I was with her the next day. Now he has begged for me back and swore up and down he is changing and doesn’t want to lose me and how he’ll do everything under the sun to make it right and earn my trust and keep me. So I’ve been hanging with him and we have been reconciling but ofc I’m wanting to take it slow to protect myself and after everything happening, I’ve had doubts in the back of my head and worries. I even had a dream like 2 nights ago that I found out AGAIN he was doing the same thing that just got exposed. Now once church ended today, my aunt took me around to introduce me to some members and there was one lady she stopped to speak to. I was introduced and the lady kept telling me how pretty I am and how sweet I seem but then she kept staring at me oddly and it was becoming awkward then she looks at me again and instantly blurts “Be careful” so I looked at her strangely and she asked “are you dating?” And I told her “yes sort of” and she proceeds to shake her head and says “ everything that glitz isn’t glam…he may seem like gold and the one but he is not intentional and does not have your best interest at heart. God has someone much better for you” and my body kinda started trembling and I looked at my aunt bc she knows about my situation so I’m thinking she told this women something and this is like a prank or something. My aunt says she hasn’t talked to this lady in months bc she’s been habitually going to service at the other location. I’m very shaken up and emotional and had to hold back tears. Was this truly a sign or wake up call from God that he isn’t going to change and I need to let him go?