A line to cross?

Every night that is empty and quite , two little shadows will be seen laying on the floor beside the wall in a market. If you have ears that are as sensitive as the one owned by my lecturer, then you will be able to hear some whispering of words or.... maybe sentences. The whispering sound is so soft until you can feel the air around you is suffocating you, if you are too focused in hearing the conversation.

Nights are cold and two stray cats were chatting to each others. One of the its name is 'Meuw-Meuw', while another is 'Mee-Mee'. As usual, they would chat about their recent life and the lives in the market is always their topic. They would asked each others questions like

'How many fish each of them got in the morning?',
'Did any of them get bullied by the other stray cats?',
'How's the fishmonger's mood recently?',
'Are the fish fresh?',
'What's the best time to snatch fish from any of the market visitors?',
'What technique can be used to prevent themselves from being discovered?',
'How to 'meow' properly in order to attract people's attention?' and the list goes on.......

One night, Meuw-Meuw asked Mee-Mee a question in a slight tone of hesitation.
"Can I ask you a question? Meow~" (Don't laugh!)
"What's the matter? Is it about the mackerel or sardine?"
"Erm... it's about a line"
"Are you asking me the best fishing line to be used? I'm not clear with that, perhaps you can ask Meowy. He's more experienced in it."
''No... ... it's not that kind of line. It's the abstract kind of line."
"A line that is abstract? Did you take any Chivas just now?"

Meuw-Meuw seemed to be a little bit frustrated.
"It's not kind of line!! STUPID FUR-BALL!It's the line of relationship!"
"........" (__ ____lll)

They stayed silence for the next 20 seconds and Mee-Mee's expression was showing that it was stunned by Meuw-Meuw's respond.
"Sorry...erm.....I know I'm a bit over-reacted."
"... ... What line are you refering to just now?" (___ ____ llllll)
"Let's imagine...In the fairy world of a Tom and a Queen, there exists a line between friendship and boy-girl-relationship (a.k.a. BGR). It is an extremely thin line, laying between that 2 types of relationship. In the past, there are numerous obstacles being placed on the line and all the possible access to boy-girl-relationship side were blocked."
(Meuw-Meuw clearing its throat)"hmm..hmmm"

"But, now.......Both Tom and Queen are gorwn-up, strong and there is no more obstacles nor any impediment that may stop them from accessing to the BGR side. What is more important is that Tom and Queen know each others very well. If you were Tom,will you cross it?"

For a cat who don't really like to use its brain in normal daily life, Mee-Mee hesitated for some time before it gave Meuw-Meuw it's reply.
"It depends on my intentions and the current situation. If there is an intention to further their relationship, then I would cross it. But, this will only happen if it is allowed by the situation."

"What should Tom do if there is a potential intruder? I mean another 'Tom' who's trying to approach Queen."
"It's the same. If Tom do not intend to further their relationship, then the new 'Tom' is nothing to their relationship. He will just like a part of Queen's life that Tom can never interfere."

"Well... ... I got it."

"What did you say just now?"

"Oh....meow~NOTHING!"
"Hahahaha......"

Sound of trucks carrying tonnes of fish, heading towards the market could be heard.....