FINAL FANTASY VII

There are four dating options in total - depending on the number of possible chosen ones. This is Aerith, Tifa, Yuffie and... Barret. What determines whether you get a particular date? It turns out that for each of the four candidates there are parameters hidden from the player, conventionally called Love Points (LP) - from now on I will also call the LP level an “opinion” about Cloud or “interest” in him. As you progress through the game, your LP level will change based on your behavior.
The simplest example: some time after the start of the game, you choose who to give the purchased flower to - Tifa or Marlene, Barret's daughter. Giving a flower to Tifa increases the chances of a date with her, giving it to Marlene increases the chances of a date with Barrett. In relation to LP, this looks like adding 5 units to the “opinion” of Tifa or Barret, respectively. However, keep in mind: your actions can not only increase the “interest” of candidates, but also reduce it. As a result, when you come to the “Golden Saucer” for the second time in the story, this is where it will happen. Which of the likely candidates has a higher LP level will be the date.

Date with Barrett:
1.Buy a flower from Aerith.
2.When talking to Jesse on the train, answer “I'm looking forward to it.”
3.Give the flower to Marlena.
4.Do not talk to Tifa in the bar, but immediately go to Barret in the basement. When
Tifa will speak to you, answer her “...Sorry.” Talk to you in the morning
to her and say “Barret's snoring kept me up.”
5. During an alarm on the train, do not rush anywhere and allow yourself to be caught in the carriage.
6.After the battle with Air Buster, answer "I doesn't know if I can hang on."
7.In the church, when Aerith is fleeing from the soldiers, ask her to wait every time,
but throw the wrong barrel every time.
8.When Aerith asks Cloud "Is Tifa your girlfriend?", answer "Yeah,
that's right".
9.When talking on the playground, select “Take her home.”
10.Before going to Don Corneo, equip Cloud to the fullest to
the don chose him. In a conversation with the Don, select “Umm...” and “Yes, his name
is Barrett."
11.In the sewers, talk to Tifa first.
12. To Marlena’s question about Aeris, answer “I don’t know.”
13.In the Sin-Ra Building, when choosing who to send to protect Aerith, choose Tifa
(“Tifa, I'm countin' on you!”).
14.After the battle, form a team like this: Cloud, Barret and Red XIII.
15.In the cell, talk to Tifa and answer her “Kinda hard.” Repeat
until you get tired of it.
16.Speak to your neighbors in this order: Barret, Aeris, Red XIII.
17.After escaping from Midgar, assemble a squad this way: Cloud, Barret,
Red XIII.
18.In Kalma, talk to the woman who talks about Mako and the woman who yearns for her old
life as a girl. Give the first a negative answer, and the second an affirmative (“Yeah,
maybe").
19. After the memory session, tell Barrett “Wait a sec” “Beautiful,
just beautiful."
20.Agree to help the residents of Fort Condor.
21.Don't make mistakes when capturing Yuffie. Or don't catch it at all. You'll catch it later
dates.
22.On the cargo ship, talk to Yuffie, but refuse to give her the Tranquilizer.
Aerith say “I dunno...”, Tifa “I don't know”.
23.In Gold Saucer, take Red XIII with you.
24.In Corel Prison, when going in search of Dean, make up a squad like this: Cloud,
Barret and Red XIII (or Cait Sith)
25.In Gongaga, take Tifa and Aerith with you, talk to Zach's parents
and leave the city without speaking to Tifa or Aerith.
26.Don't do the subquest in Wutai. Do it after the date.

Author - Dangaard

The trophy is buggy due to an excessive decrease in Tifa's reputation level (multiple selection of the "Kinda hard" option in a prison cell, in the Shinra corporation building), as well as an excessive increase in Barret's reputation level (multiple conversations with him in Cosmo Canyon) To prevent this from happening I happen to attach detailed instructions (in English, you can print them out if you wish) for obtaining this trophy. The advantage of this instruction is that you (subject to the conditions of the instruction) will know the final number of reputation points for all heroes and will not allow a glitch with a trophy.