Either of you can. Bumble gives both people in a match one opening message each, and the rule works the same way for everyone, so a man does not have to wait for the woman to start. Whoever writes first gives the other person 72 hours to reply.

How the first message works

Both of you have 72 hours from the moment you match to send an opening message. If you send yours first, she has 72 hours from that point to answer, and the same applies the other way around. If neither of you writes anything in the first 72 hours, the match expires.

Each person gets one message before the chat opens. When the other person replies, the conversation opens up and you can go back and forth as normal.

Should you go first

In almost every case, yes.

Waiting hands the whole thing to chance. She may be waiting on you while you wait on her, and three days later the match expires with nobody having said a word. A lot of perfectly good matches end exactly like that.

Going first also says something before she reads a single word. Bumble describes the opening message as a way of showing genuine interest, and that is how it lands. A man who wrote to her the same evening looks keen in the right way. A man who sat back to see whether she would do the work looks like he was hedging.

It has always worked this way off the apps too. Most women will not start a conversation even when they are interested, so treat getting things going as your job. You will lose far fewer women to silence.

When her message is already waiting

If she wrote first, do not send a separate opener as if she had not. Your reply is your opening message, and it is what opens the chat.

You technically have 72 hours from her message, but do not use them. Reply the same day, while she still remembers why she wrote to you.

Treat her line as an invitation, however short it is. Answer what she said with something real, add one thing you noticed about her, and end on something she can reply to in a sentence.

What going first does not change

She still decides whether to answer. Being first puts your message in front of her. It does not make her reply.

And because you only get one message before she answers, being first with a weak line does you no good. A bare "hey" is the classic example. Bumble even shows a gentle suggestion to make a message that simple more personal. It will let you send it anyway, but the suggestion is right.

Writing the one message

Keep it to one or two sentences, and make them about her rather than you.

Skip her first photo, because every other man already commented on it. The later photos and her written answers tell you far more: the skyline behind her in one shot, the same dog turning up in three pictures, the strong opinion she chose to put on her page. Pick one of those and do something playful with it.

A read on her works well: "You seem like the one who gets everyone lost and somehow makes it the best part of the night." So does a choice she will enjoy making: "Beach vacation, or a city you can walk around for days?" Both are easy to answer, and neither sounds like it was pasted into twenty other chats.

After she replies

Once she answers, the chat is open and your job changes. You are no longer trying to get a reply. You are trying to get a date.

Have a few real exchanges where she is adding things rather than just answering your questions. Then move it forward. Bumble lets you send voice notes and start a video call inside the app without handing over your phone number. A short call before you meet does a lot to make the date feel like seeing someone you know rather than meeting a stranger.

Then suggest something concrete. Name the place, name the evening, and keep it short, an hour for a drink rather than a whole dinner. A vague "we should get a drink at some point" leaves all the planning to her, and most chats that end on that line simply stop.