And It is better not to tell about that trip to our coworkers and our family because they would doubt our relationship. We have to keep silence not to let them worry about anything. We might feel some guilty as you said. As for this trip, you just pay only flight ticket for round trip. I'll pay others. I think this is the cheapest proposal. And I can promise that I won't do anything to you. I think it is very important for you and me in order to keep good relationship as a close friend.
(2)You travel alone & Stay at different room with me & Travel itinerary is arranged by me.
Almost contents are same as above (1)
But in addition to flight tickets and I will ask you to pay your hotel room fee. I’ll pay others. You can sleep without any worry. 55555