Let me add a twist what if it's your BM?. My BM "supposedly" was getting married and asked me to go I said "hell no" than she asked please for our kids once again I said "HELL NO"
You ain't talked to her in 2.5 yrs so it don't sound like she did it on some "oh we still cool" shit. More like "I'm gettin married look at me now".
No point in wasting your time with that
Now if my ex wife was getting married, not only would I go if invited, I'd buy that nigga bottle of hen and a sympathy card. Then laugh my ass up outta there