No, when you permanently miss an event the text will be red with a line struck through it. The event will also have an alternate title.
If it's still in black like that it just means you've not done the event yet. If I remember rightly this is one of Rin's early events, you just need to go see her in the cafe on a weekend with like 5 affection. It's important in this game to remember not to focus too much on one character - remember, this is a lengthy VN, not a generic porn game. Don't focus on your favourite girl, try to balance your time between all the girls and rise their affection fairly evenly or you'll really slow yourself down, a lot of the main story events require you to have done specific character events.
If you're not already it's highly recommended you use the walkthrough mod - or else if you get stuck look up the next main quest on your wiki and check the requirements. It's not a big deal at the stage of the game you're in at the moment but down the line some events have some hard to guess triggers.