Relationship milestones and monthsaries
Relationship milestones are the dates and firsts a couple chooses to mark, such as your first date, 100 days together or your first anniversary. No list is compulsory. The milestones that matter are the ones that mean something to the two of you, so use this guide to pick yours.

What is a monthsary?
A monthsary is the monthly anniversary of a relationship: if you got together on March 12, every 12th is your monthsary. The word is especially common in the Philippines. Couples usually mark the early months, and many stop once they reach the first year.
Which relationship milestones can you celebrate by date?
| Milestone | When it falls | A simple way to mark it |
|---|---|---|
| 1 month | Same day next month | A short note or a favorite meal |
| 3 months | About 91 days in | A proper date night |
| 100 days | About 3 months and 1 week in | A photo from each month |
| 6 months | About 183 days in | A day trip or something new |
| 1 year | Same date next year | Return to where it started |
| 1,000 days | About 2 years and 9 months in | A letter about your favorite moments |
| 5 years | Same date, five years on | A trip you have talked about |
Get the exact dates with the anniversary calculator. For things to do on the day, see these anniversary date ideas.
What counts as a non-date milestone?
- First date, first kiss and first "I love you"
- Meeting each other's friends and family
- First trip together
- Moving in together
- Getting a pet
- Engagement and wedding
Not every couple wants all of these, and they do not have to come in any particular order.
How do you make a relationship timeline?
- Write down the firsts you remember, and ask your partner to add theirs.
- Look through old messages and photos to find the exact dates.
- Add a photo or a sentence to each date.
- Keep it somewhere you will open again, such as a shared album or an app.
LoveKeeper can hold this on your phone: dates with reminders, memories with photos, and a bucket list for what comes next.
Keep your milestones in one place
LoveKeeper includes dozens of ready-made suggestions, such as first date and first kiss, so you can add them in a few taps.
Free on iPhone, iPad and Android. No subscription and no in-app purchases.
Frequently asked questions
How do you celebrate a monthsary?
Keep it small: a message, a photo from the past month or a favorite meal. A monthsary is a reason to pause for a moment, and it does not need a gift.
Is 100 days together a big milestone?
It is a popular one, especially in South Korea, where couples often celebrate 100 days. It falls about three months and one week after you get together.
What is the first big relationship milestone?
For many couples it is the first month or the first 100 days, but there is no fixed order. Mark whichever dates feel important to you.