They communicate with consideration
Someone who is interested will usually make an effort to communicate in a way that considers both people's time and comfort. That does not mean they must reply immediately or be available every hour.
Look for a pattern of honest communication. If plans change, they explain rather than repeatedly disappearing without acknowledgement.
They want to know you as a person
Genuine curiosity goes beyond appearance or what someone can provide. They ask about your interests, experiences, values and opinions, and they listen to your answers.
The conversation should feel mutual. Both people should have room to share, ask questions and decide what they are comfortable discussing.
Their actions broadly match their words
Promises are easy to make, especially early on. Notice whether the person follows through on reasonable plans, communicates honestly and treats you consistently across different situations.
Nobody is perfect, and an occasional mistake does not define a person. What matters is whether they take responsibility and make a sincere effort to repair misunderstandings.
They respect your boundaries
A respectful person accepts when you say no, need more time or prefer not to share something. They do not use guilt, threats or pressure to get access to your time, money, body or private information.
You should be able to express a boundary without fearing punishment or emotional manipulation.
You can let the connection develop
Strong feelings can happen quickly, but trust needs time and shared experience. Be cautious if someone insists you are destined to be together, asks for secrecy or requests money before you have built a reliable connection.
You do not have to decide immediately where a new relationship is going. Take the time you need and notice how you feel around the person.