You both have been seperated for 7 years? Have you finalized your divorce?
When you have gone over to visit twice have you stayed in his home ? Did he help pay for the cost of your trip to see him ? Has he come to visit you ? You admit that you have jealousy problems and thats fine .. I mean your in a long distance relationship of course it going to be hard to have full trust .
His issues with the lawyer ... well he could actually be having trouble getting his divorce process going .. He does seem unwilling to have you on the line while he is in an actual meeting .. Kinda red flag there i would say .
I think you do have reason to question his motives and behavior.
Why did you pay for the second Lawyer ? Did you actual pay the money to the lawyer or to your boyfriend??? Why could he not pay for that himself ?
I think you need to really look at your whole relationship . There are alot of red flags here. The one good thing if you do break off this dysfuntional relationship its not like you are going run into him around town.
I wish you the best