Link:http://www.kongregate.com/games/bento_smile/air-pressure
Badges:
[badges=http://www.kongregate.com/games/bento_smile/air-pressure:mno1ondx]RandomNumber[/badges:mno1ondx]
I found an walktrough for the 3 ends but it is pretty f*cking long so I will put it on                               offtopic-BBcode Spoiler-BBCode
And of course the website that i went and got the walktrough:Kyle mawer

Made a more elegant walktrough but the other one will still be here

Acceptance:

Let's just stay in;
I'm sorry;
...About the day we met;
Yes;
Why are you here?
What makes you say that?;
Yes;
Thinking about us;
Get closer;
Wait,what was that?

Hospital:

Let's just stay in;
I'm sorry;
...About the day we met;
Yes;Why are you here?
What makes you say that?;
Yes;
Thinking about us;
Get closer;
Yes

Rejection:

Let's just stay in;
I'm sorry;
...About the day we met;
Yes;
Do you like me?;
I'm not a very nice person;
Yes;
...;
Stop thinking;
Need to be alone

BIG ASS WALKTROUGH:
Each stage of the walkthrough contains what the in-game characters say followed by which stage number of the game you should jump to in the walkthrough to stay with the game play.

START
Let's just stay in: 2
I'm going out: 11
2
I'm sorry: 3
I'm with you all the time: 19
3
...About the day we met: 4
Do you want to listen to some music?: 24
4
Yes: 5
I'm not sure: 27
5
Why are you here?: 6
Do you like me?: 14
6
What makes you say that?: 7
Is it really that obvious?: 21
7
Yes: 8
Uh...: 16
8
Thinking about us: 9
...Just thinking: 22
9
Get closer: 10
Wait: 30
10
Yes: HOSPITAL
Wait, what was that?: ACCEPTANCE
11
I should stop: 12
Carry on: 34
12
Yeah, I wouldn't mind: 13
No, I'm fine: 39
13
Yeah, let's go sit somewhere quiet: 27
Why don't we head back home?: 5
14
I'm not a very nice person: 15
Maybe I need more friends: 41
15
Yes: 16
No: 8
16
Hey...: 17
...: 25
17
I want us to be closer: 18
I was just checking: 38
18
I'm sure: HOSPITAL
W-wait: ACCEPTANCE
19
So every day is equally special!: 20
I just didn't notice the date: 42
20
Yes: 5
No: 31
21
There's no harm in it: 8
I could be more independent: 16
22
Being stuck: 23
What was that?: ACCEPTANCE
23
I don't need control...: HOSPITAL
I need to change: ACCEPTANCE
24
Forgive her: 5
Make her feel a little bad: 31
25
Stop thinking: 26
Keep thinking: 47
26
Am happy: ACCEPTANCE
Need to be alone: REJECTION
27
Buy ice cream: 28
Confess: 36
28
...we should go sit by the river?: 29
...I rely on you too much?: 40
29
Forget it: 8
Learn to live with it: 16
30
Get closer: HOSPITAL
Pull back: ACCEPTANCE
31
Apologise: 32
Stay silent: 43
32
It's my fault: 33
...Because: 45
33
Yes: 8
No: 16
34
No, I'm not: 35
...: 48
35
I'm so glad: 27
I hate it: 49
36
Yes: 37
No: 56
37
More friends: 16
Instead of you: 52
38
I'll just see what happens: ACCEPTANCE
Take control: HOSPITAL
39
I wish she was here now: 27
I'll be fine: 49
40
No: 8
Yes: 52

41
I don't mean it like that: 16
Is it wrong for me to want more friends?: 52
42
I'm sorry: 31
...: 31
43
Wait...: 44
...I don't care: 46
44
Apologise: 16
It's not unreasonable: 52
45
I don't know how else to fix things: 8
Don't accept it then!: 16
46
...No: 16
Yes!: 52
47
Yes: REJECTION
No: ACCEPTANCE
48
Look, it's not you...: 49
What are you doing here anyways?: 31
49
Sit down: 50
Keep walking: 59
50
Feel better: 51
Feel worse: 63
51
Confront her: 52
Forget it: 16
52
No: 53
...Maybe: 57
53
I've made up my mind: 54
H-how dare you!: 61
54
Make her leave: REJECTION
Wait for her to stop: REJECTION
55
I need her: 16
We need to talk: 52
56
Apologise: 16
Let her leave: 52
57
I'm not happy: 58
Forget it: 62
58
Ask her to leave: REJECTION
Apologise: ACCEPTANCE
59
Feel better: 60
Feel worse: 55
60
Leaving her: 52
Staying with her: 16

61
Yes...: REJECTION
Shut up!: ACCEPTANCE
62
Fine: ACCEPTANCE
...: ACCEPTANCE
63
...This is unhealthy: 52
...I should go back: 16
The three endings:
HOSPITAL:
This is the ending where you understand a bit more about the true nature of your "girlfriend" Leigh