1. You begin to question your self-worth.
This is a BIG one. Your significant other should reassure you and never let you feel that you are not enough. If this is beginning in your relationship, be on the look-out. Your mental health should always be the number one priority, and if your partner is doing something to jeopardize this, it might be time to let this one fizzle out.
2. He/she disregards the plans you had made together.
If you are constantly getting canceled on or ditched for things or people that should not come before you or your relationship, this could be a sign that your relationship is on the outs. If your partner feels strongly toward you, others will not come before you. Obviously, there are some exceptions to this one. But if it continuously occurs throughout your relationship, this could become an issue for you both.
3. It is obvious you are not a priority in his/her life.
Do you feel that you are often begging for attention or that you are being "too clingy"? If your partner wants to be with you, he/she will make time for you. You won't have to plead with them to spend time with you, they will want to. They should want to be with you as much as you want to be with them, and not shame you for requesting more one-on-one time.
4. The two of you fight more than you are happy.
Sometimes you don't even realize you are fighting. It seems like it is just a casual conversation until it suddenly turns sour and ends with yelling and slamming doors. Arguing isn't always necessarily a bad thing if it is over a logical issue that needs to be addressed. But if you find yourself bickering over your boyfriend buying the wrong cereal or your girlfriend breathing too loudly, you need to assess your relationship. If you disagree with your partner more than you agree, it might be time to seriously think about ending the relationship.
5. The relationship feels one-sided.
If you are making all the reservations, planning the dates, and buying the gifts, you may be a victim of a one-sided relationship. If this is the case, take a step back. See how much you spend time with them and how many dates you go on. If it drastically reduces, you have your answer. A relationship should be an equal give and take. One person should never be doing all the work.
6. You notice yourself feeling sad and insecure more often than not.
Though your partner is by no means responsible for all of your emotions, they should NEVER tear you down, only build you up. Your significant other should empower you and make you feel loved and wanted. If your boyfriend/girlfriend is always critical of you and never gives you a single compliment, get out! Solitude is better than toxicity.
7. You don't laugh together like you used to.
They say laughter is the best medicine and it also rings true for relationships. In the beginning, you and your partner cracked jokes and made each other laugh all the time. Now, not so much. Laughter is necessary for any healthy relationship. You need to be able to be yourself with your significant other and if you can't even laugh together, something is seriously wrong.