Emotionally the stumbling block seems to be the 22 yr age difference with the crazy girl . A man of 67 will come with a past . While that may not have been a wise decision, he hasn't axe murdered anyone . Your own age difference is 14 yrs , which some would feel they need to judge . They would be wrong to judge , but there's always plenty of people who feel the need to judge others . So that stumbling block ... are you unable to accept the relationship he had , or is it that his past choices makes you feel uneasy about his future choices ?
Logistically it sounds quite difficult to maintain and/or develop the relationship . The physical distance , country borders , current family commitments and financial backing are difficult hurdles . If you were looking at the situation logically then you would say " it's just too difficult " , but of course you have said you feel a strong emotional connection to this gentleman . It's easy to over think everything . Live your life as you do . Enjoy the bond you have and see where it takes you . Offer nothing you don't believe you can realistically give . Just enjoy your connection today . Don't worry about where it will be in 1 year or 5 years . Pretty sure that's how the young people do it ?...from memory .The future has a habit of taking care of itself .