Here are some tips for the Love & Seduction card game:
1. Utilize BIRD cards for when the opponent has ultra sense so that you aren't immediately at a disadvantage. (The AI will always pick a card stronger than yours unless they don't have one, in which case, they will pick their weakest card to discard).
2. Save your high powered cards for when YOU have ultra sense so you can guarantee high damage.
3. I suggest having approx 10 cards in your deck. You can have a minimum or 5 or a maximum of as many as your power level can hold but 10 is the sweet spot between good damage and good sustain.
4. If the bosses are too hard, you may need to level up. Each time you level up, you gain 2 more HP, and 4 more power slots in your deck. It's really useful for lasting a little longer or just holding more high damage cards to end them quicker. Boss fights unlike the normal 'dates' you go on via the SMS app do not scale in difficulty, if you're having trouble with a boss, simply levelling up will increase your chances of winning.
Yes it's partially RNG but BIRD cards and the Ultra-sense systems are meant to add strategy and swing things into your favour and if you have the right deck build, you should win more often than not (unless you're under powered).