Could I be Bisexual?

My wife passed away last year and has left a void in me.Half of me is missing.I have always had a very strong sex drive and are sex life was good.My drive is coming back and without a partner.I loved being married,and hit the lottery with my wife,she had it all.Ok to my question.I can't see myself with another women,as I would always be comparing her to my wife.I fooled around with boys when we were younger,but was never really attracted to guys.Lately I have noticed younger,feminine acting guys and have got turned on.I am tempted to pursue this new attraction,but at my age (60) am I a fool?It would have too be discreet as we have 6 children,not sure how that would play out.Im not sure I could even go through with it.Any advice you think could help.Oh and I have never been able to masturbate to orgasm with my hands,only intercourse which makes this a real problem.Thank you for reading my babbeling.