Others who know you both most probably sense the sexual tension when they see you together, especially when the tension is very intense. But people don’t notice it in the initial phase when you’re feeling small signs like racing heartbeats that are very personal. Unless someone else observes you very minutely, noticing the smaller signs is next to impossible for others. But, if you flirt with obvious visible signs like spending more time with this person or locking your eyes for a long period, everyone will catch up to your secrets. If you’re trying to grab that person’s attention with something, others might sense it too. Unfortunately, people sometimes sense it before the one they desire. In some situations, you don’t want others sensing this sexual tension. Take precautions to keep everything low. Avoiding others doesn’t always mean something shameful. Cutting off unnecessary drama is the aim here. Don’t feel ashamed if you’re true to yourself because it’s a hormonal thing and every healthy human being experiences it. Even if the sexual tension is between two people of the same gender, that’s normal. As long as you don’t hurt or violate anybody, any relationships, or any law, you’re innocent.