Nelana has three endings, but the beginning is pretty much the same for all three:
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Continue (to the bar)
Use the bar
2. Could you take a bottle of champagne over to the redhead?
Finish ordering drinks
Play the piano
Finish playing
Speak with Nelana
Continue
1. Hello Nelana, would you care to join me for a drink?
3. Let's play a game
1. Sounds like fun
Chair
Have a drink
I'm ready
Bald (balding head of the man standing at the bar)
Have a drink
I'm ready
Wife (wedding ring of the lady walking by)
Have a drink
Continue

[SPOILER]
Ending 1 (Top Deck) and 2 (Nelana's room) share a few steps more:
2. Let's take a stroll around the ship
Walk alongside her
Push her against the wall
Stroke her cheek
Kiss her cheek
Step away
Finish your walk
Let's go back to the bar
1. OK. Why are (you) so lovely?
Stroke her cheek
Kiss her
Finish kissing
Continue

[SPOILER]
Ending 1: Top Deck
2. Let's go for a stroll on the top deck
Visit the top deck
Hang on the top deck
2. I think it is hot. Is it always like this?
2. Why don't you take some off
Elbow ruffles
Continue
Suggest taking off the shoulder ruffles
Continue
Suggest she takes her sleeves off
Continue
3. That skirt still looks pretty heavy
Continue
1. You've come this far? Will you go all the way?
Continue
Hang around naked
(From here you are on your own)

Ending 2: Nelana's room
3. Let's take a stroll through the engineering deck
Draw her in close
3. Your eyes are as blue as a mid-day sky (or answer 1, same effect)
2. Your lips are as soft as rose petals
Kiss her
Finish kissing
Continue
3. Let's visit the topdeck
Suggest going to her room
Sit on the bed
Kiss her
Finish kissing
Let her go
Wait
Kiss her
Finish kissing
Sit on the bed
Slide her nighty off
Continue
(From here you are on your own)

Ending 3: Threesome
1. Why don't we go to the restaurant for a meal?
Wait for the waitress
1. Thank you Latricia
Ask what she wants
Gesture for the waitress to come over
1. Two chickens, please
Eat
Speak with the waitress
1. I just wanted to say that you where a great waitress today
Return to Nelena
Let's go back to the bar
3. What is the naughtiest thing you've ever done
Let her ask you something
(All three answers are good)
Continue
Speak with the waitress
2. If you're finished, would you care to join me and Nelena?
Go with Latricia to Nelana's room
Kiss Nelana
Finish kissing
Speak to Latricia
Kiss her
Finish kissing
Enter the bathroom
Enter the bathroom
Push her into Nelana (Latricia)
Watch
Watch
Continue watching
(From here you are on your own)