Tbh if my dad is marrying a woman 1 year after my mom died, I would be pissed and also feel betrayed too. Like you married my mom for 28 years and after she died you immediately love another woman and marrying her?? It would made me wonder if he ever love my mom?? So screw my dad and his new lover I would not support them and I do think the dad is being selfish especially after he slap the Fl and not listening to her or her concerns!! I personally would not go to the wedding!!!!